If quartz is so wonderful, you might be wondering why quartz watches don't keep time with real-time accuracy forever. Why does it still lose seconds here and there? The answer is that quartz vibrates at a slightly different frequency and at different temperatures.
and pressures, so that his ability to keep time is a tiny problem in the heat and, in the cooling, changing around us. In theory, if you keep a watch on your wrist all the time (which is at a more or less constant temperature), it will keep better time than if you keep them in a different place (resulting in a temperature change each time). But even if a quartz crystal can vibrate at a constant frequency, on a microcircuit, tiny imperfections are earthly, friction, which means that errors can be introduced into the timing of minutes. All these effects should introduce inaccuracy, until the second day in the clock. Typical quartz and watch (keep in mind that the second loss may be one day and be compensated for the second and the next day, so the overall accuracy can be as good as a few seconds per month).
It is important to remember that piezo quartz: will vibrate when you apply electricity to it, or it will emit electricity when you make it vibrate. The crystal oscillator uses piezoelectricity in two ways: at the same time!
I have a circuit drawn up like it, like a quartz crystal separate from the microchip circuit, but, in fact, it is a personal part of the printed crystal and two electrodes are wired into it. You can clearly see them in the photo of the inside and should look and photograph the generator itself: they are both silvery legs sticking out of the cylindrical metal. Basically, this is a crystal oscillator, but the other component of the microcircuit is wired into the circuit, like a resistor or capacitor.
I say "circuit", but it's easy to think of an oscillator within two separate circuits, both on the same microchip. The first circuit (we call it the input) stimulates the quartz crystal with electrical flashes. Feeding electricity into quartz makes it vibrate (or, if you prefer, oscillate or resonate) through what is sometimes called the inverse piezoelectric effect (where electricity produces vibrations). The oscillator is set up so that the quartz directly vibrates 32,768 times per second. But remember, now the normal piezoelectric effect is: when a piece of quartz vibrates, it generates an electrical voltage. The second microchip circuit senses the "output voltage" (presumably 32,768 times per second) and divides the frequency of receiving pulses once per second to drive the motor into gears. I watch with a digital display, instead of transmitting, the chip repeatedly divides the oscillator frequency to drive hours, minutes, seconds (as shown in the picture).
Crystal oscillator divides binary, counters and displays into a typical Timex digital clock with US Patent 3,863,436.
Operation: How the digital crystal oscillator controls the hour and minute of the time display and a flashing colon in between ("0:32") to indicate the seconds. The oscillator (yellow) vibrates 32768 times per second. Binary divider (blue, left), by 15 times, TO CREATE 1 Hz (one per second) pulse that drives and blinks. The 1-Hz signal from the divider itself is like about 60 minutes and another 12 hours. Serves signs of a set of drivers (red) that power parts in the digital display.
When the crystal vibrates, it produced a piezoelectric voltage. This was detected using a second set of electrodes (attached to another part of the same crystal) and fed into the output circuit. When quartz technology was miniaturized for use in compact wristwatches, it became clear that smaller oscillators were needed, and there was no room for two pairs of electrodes. This is why modern generators use one pair of electrodes to stimulate both crystals with energy and detect their own vibrations.
That's as much as I'm about to tell you. If you would like to know more, you would like to take a look at the following sources. Warned that they are complex and difficult to understand, if you have some knowledge of electronic engineering, then go ahead.
In one of early species quartz oscillator, quartz crystals had two sets of electrodes located on it. The first set was connected to the input electricity circuit and fed into the crystal to make vibration. When the crystal is shaken, a piezoelectric voltage occurs. This was marked by a second set of electrodes (stuck with some of the same crystal) and fed into the output circuit. When this is used in miniature quartz technology in compact wristwatches, the need for small and oscillators is obvious. In one early form of a crystal oscillator, a quartz crystal had two sets of electrodes mounted on it. The first set was connected to an input circuit and fed electricity into the crystal to make it vibrate. When the crystal vibrates, it produced a piezoelectric voltage. This was detected using a second set of electrodes (attached to another part of the same crystal) and fed into the output circuit. When quartz technology was miniaturized for use in compact wristwatches, it became clear that smaller oscillators were needed, and there was no room for two pairs of electrodes. This is why modern generators use one pair of electrodes to stimulate both crystals with energy and detect their own vibrations.
Why do wristwatches start to fall behind?
Watches are an essential accessory business people to get the current time. Watch manufactories around the world do not stop improving watch movements, which is why they constantly change their design and get ever higher precision. However, over time, watch mechanisms fail or simply start showing the wrong time for no apparent reason. But if you immediately take a high-quality Rado watch, then such troubles are unlikely to happen to you at all.
All modern mechanical watches, like hundreds of years ago, consist of many transmission mechanisms, distributors and movement regulators. Their smooth operation is a prerequisite for accurate time display. Most of all, the accuracy of a mechanical watch depends on the regulator mechanism. The main task of this device is to measure certain time ...
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The accuracy of quartz watches is plus or minus 30 seconds per month, that is, 1 second per day. But as a rule, even not quite expensive watch models go second by second. Hurrying quartz watches for 20 years of work in the watch business, I met a few. Basically, these were our domestic watches with low-quality quartz. Quartz watches can lag for three reasons:
1) the battery is dead (as a rule, this is the main reason)
2) the grease in the mechanism has thickened (if the watch has been used for a long time without maintenance)
3) dust or other foreign body into the watch mechanism (this happens with watches with poor sealing of the case, usually in very cheap Chinese watches).
In some watches, for example, Seiko provides information about a discharging battery - the second hand on the watch starts running after 2 seconds, then if the happy owner of such a watch does not pay attention to this, the second hand starts running after 5 seconds, ...
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In any clock there is a certain device that measures equal intervals of time. For example, in the most ancient wall clocks, this is a mechanical pendulum. I don’t know how it is on simple clocks, but on fairly solid clocks at the end of the pendulum there is a corrective device, roughly speaking - a small screw on which a nut is screwed. By moving the nut in one direction or the other, you can adjust the duration of one oscillation, and thereby the accuracy of the watch. In a mechanical wrist watch, such a device is called a "balancer". This is a "wheel" with a spiral spring, which rotates about half a turn in one direction and the other alternately. One end of the spring is rigidly attached to the balancer, and the other end passes through a kind of "fork" that can move. By moving this fork, the length of the free part of the spring is regulated, and thereby the accuracy of travel.
In electronic devices (just watches, telephones, televisions, recorders, microwave ovens, washing machines, well, not much...
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I have two electronic and one electronic-mechanical clock at home.
With the onset of cold weather Digital Watch began to lag behind. And not wallpaper.
but only one. Well, it would be okay if the electronic-mechanical ones began to lag behind, that's me
I could somehow explain, let's say the gears change size from heating,
and even then this assumption is valid only for metal gears,
whose coefficient of thermal expansion is much higher than theirs
plastic counterparts. But where do you find metal gears these days?
in an electronic-mechanical watch?
In general, I began to reason in a Holmesian way - deductively, in what way can
be the reason for this lag? Ideas with goblins and hobbits living
in hours, threw it away immediately. Although, I must admit, after a glass of white,
the ideas didn't seem all that absurd.
Then I got into the electronic jungle. The heart of the electronic watch is
as you know, quartz is such a crystal that, when applied to it ...
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The noise of the movement of the interior clock mechanism is not regulated by any GOST - so the appeal to the quality of the repair is difficult to apply.
The larger the gap in the clock gears, the more "noisy" they are, but even this noise is difficult to distinguish from the usual urban background. So, the older they are, the more noisy they go, as a rule.
Today there is only one system of the wall clock mechanism that eliminates noise altogether - Sweep Hand - a "smooth hand", there is not 1 pulse per second per mechanism rotor, but usually 5 pulses per second. Therefore, the clock is almost completely silent.
As far as I remember this watch (your brand). There is an ordinary mechanism there (Taiwan seems to be, these are usually good mechanisms), there is no point in changing it to another of the same master (it’s a lot of fuss, it’s easier to fix yours, especially since repairs are very easy to make there).
But to check if the master has changed the movement in your watch is quite simple - just compare ...
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The clock is an unchanging means by which the current time was determined at all times. But watch companies around the world are tirelessly working to improve watch movements, which leads to a change in their appearance and improve their accuracy. However, over time, the clock mechanism may fail, or simply start showing the wrong time for some unknown reason.
If you immediately buy high-quality copies of Patek Philippe to buy, then such trouble can be avoided.
All components of a mechanical watch are a kind of engine, consisting of transmission mechanisms, a movement regulator and a distributor that transmits impulses to the regulator. The accuracy of the movement in a mechanical watch is determined by the regulator of the clock mechanism. It is this device that measures certain periods of time. If cycles are violated in this device, then the clock may well begin to lag behind.
The accuracy of the clock can be determined by...
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The work of the clock is usually called the "move", therefore, during operation, they can be both late and in a hurry. The reasons for the hurry for each type of watch will be different.
Sponsored by the placement of P&G Articles on the topic "Why the clock is fast" Why the clock is behind How to transfer an employee to a part-time job How to convert kilowatt hours to kilowatts Mechanical watches can rush because the balance hair has become magnetized. Take the watch to the workshop, they will demagnetize it. "Hurry" can also begin because oil has got on a hair, for example, if you tried to lubricate the mechanism yourself.
An electronic clock can rush due to a pulse generator that has ceased to withstand the number of pulses per unit time. In order for the electronic watch to serve for a long time, take care of it, try to periodically wipe it from dust and do not let the clock mechanism get wet. Consider temperature conditions, some models stop working from sharp fronts. Treat your watch with care, as accuracy ...
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By the way, if the battery dies, you will not start the computer. And besides, you run the risk of crashing the system.
You don't have to be scared. This was only in the days of Pentiums and with one of the types of motherboards, where the battery was non-replaceable and was filed along with the BIOS (also like non-replaceable). A dead battery called Beavis' karachun. But it was a scheme similar to direct sabotage. In a normal case, a dead battery in the worst case completely resets the BIOS to default settings: it forgets the date and time and requires you to set them at boot (via F1, usually). There may also be a variant of partial "amnesia", when the time elapsed when the electricity was turned off is forgotten. But usually, if the computer is not completely disconnected from the network, just turn it off, then it can work with a dead battery indefinitely.
By the way, the fact that the life of a computer with a dead battery is 5 years is not a fact. The store could put some kind of defective battery. Sometimes they die in a couple of years.
...
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07/09/2009, 14:40 Stfw.Ru: The first IBM PC could not remember the time when you turned it off; you had to re-enter the date and time; when you turn on your computer. Some i t companies entered the market with products that solved this problem. IBM got around this problem by building a small battery into the IBM AT that allowed the built-in clock to run before the computer was turned on again. Now such a battery is an almost universal component for computer systems; it also provides power to the CMOS memory, which stores BIOS (Basic Input/Output System) configuration settings.
If the battery runs out, the watch will run slower than it should and fall behind. This is the most common cause of a computer's system clock being lagging. There are others possible reasons like software problems. Diagnosing whether the problem is hardware or software is simple: if the clock is behind when...
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Each tablet has a function to display the date and time corresponding to the selected time zone. Late android versions(4.1+) determine such parameters automatically. However, it happens that the initial setting does not match the real indicator, and then an adjustment is required. Often, at the time of switching the clock to winter or summer time, a system failure occurs, and the device then starts to give out incorrect information.
It cannot be said that such incidents also happen when the tablet is turned off for the night in order to save battery. Note that in solving the problem discussed here, changing the firmware to latest version, which automatically adjusts the named indicators.
So, consider the following option: the mobile operator provides false data, since the SIM card for the device was purchased in another region where different settings apply. You can always check this fact in the “Date and Time” section, and distorted indicators should be ...
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Hello everyone!
This oddity happens to our clock, which hangs in the kitchen. Recently, I noticed that they began to lag behind the correct time, well, of course, the battery began to sit down. By the way, until I noticed that the clock was lagging behind, I was always late everywhere, because. based on these hours...
And so, I bought new batteries, changed them and ... everything seemed to be fine, but after a while I began to feel that time was running somehow quickly)) Yesterday I looked at the clock that it was time to put the child to daytime sleep, went laid down, left the bedroom - looked at the other clock and was stunned! How did it happen that I put the child to bed in 5 minutes, although I fell off with her on the couch for 40 minutes. I went to check the clock and saw that they were in a hurry by as much as 45 minutes!!! How? The battery is new, this has never happened before - has the clock gone crazy ??? I specially photographed the clock in the kitchen and in the living room (the difference in the process of photographing is...
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It's very strange, the "swatch" watch, not bad, worked for 2 years (and this company does not even give a guarantee because of the confidence in its "eternal" quality), recently they began to lag behind. Replaced the battery. After some time - again. in the workshop they said that it is useless to repair, it is disposable, otherwise everything is in order with the mechanism. Tired - decided to throw it away. But, for starters, I just put it in a drawer at work before leaving, in the morning - perfect, they didn’t lag behind for a minute. I put it on my hand - the lag immediately went. So this is what I'm talking about - I know that this may be due to my energy and not very well. Can anyone clarify?
It Depends on the magnetic field (your personal biofield) !!! By the way, if they fall behind, it's not very good. It means that your internal clock is malfunctioning. Pay attention - you often either sleep until dinner and go to bed late, or vice versa !!! In short, the mode that pleases you, ...
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Quite often, people ask if it is possible to move the arrows back. The time on the dial can be set by turning the arrows both forward and backward. It is better to rotate the arrows in the direction where the number of revolutions is less.
An exception to point 1 are watches with date and other complex functions. It must be remembered that in such watches the hands should not be rotated backwards while the calendar mechanism is engaged or the calendar may be activated during installation. Watches come in a variety of designs, so it makes sense to consult with a watch manufacturer's representative for each model. If you are tormented by doubts, move the arrows only forward, set the calendar and complex functions only after setting the exact time.
When setting the time, turn the hands forward not in one continuous movement for several turns, but intermittently, in small portions. This will save the minute tribe1 from breaking, especially if it is tight...
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The main parts of a mechanical watch are the engine, the transmission mechanism, the movement regulator and the distributor that transmits impulses to the regulator. The regulator of watch movements is responsible for the movement of mechanical watches. It measures certain periods of time per day, for example, a second, half a second, a quarter of a second. If this device starts to regulate a different value, for example, indicates a lower number, then the clock will begin to lag.
The accuracy of the watch can be checked using a special device called a thermometer, but for this the watch will have to be opened, and therefore it is better to take it to repair. Note that if the clock is slow, then the main elements of the thermometer are too close.
Quartz watches work thanks to quartz crystals. The main components of such watches are a battery, an electronic generator, a divider counter and a special amplifier that drives the clock mechanism. Quartz watches may fall behind due to the element...
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10 ways to kill the clock
What not to do if you do not set yourself the goal of simulating an "accident" in order to receive a new model as a gift. And it does happen...
1. Go to the sauna
Sauna is good for health, but bad for the clock. When heated, the materials from which the watch case is made - steel, glass, rubber seals, etc. - expand in different ways, and even if the watch can easily withstand diving to extreme depths, it is not at all a fact that they will survive the banal bath and laundry procedure.
2. Wear with an overcoat
Hard wool clothing has excellent abrasive properties. Do not be surprised if, after six months of wearing socks, the gilding begins to disappear from the watch, and on ...
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From Wikipedia, the free encyclopedia
Clock- a device for determining the current time of day and measuring the duration of time intervals in units less than one day.
Size and portability: Measuring mechanism:
This clock is based on the fact that the sun casts a shadow from objects, and its path through the sky is the same on the same days. different years. Using the drawn circle and corrections for the latitude of the area, you can estimate what time it is now.
Ancient Chinese water clock
A water clock, also called a clepsydra, operates in a manner similar to an hourglass.
Along with the sundial, they are possibly the oldest instruments for measuring time, if we do not take into account the vertical gnomon stick along the length of the falling shadow of which the ancient pastoralists were guided in time. Given the deep antiquity of the water clock, where and when they first appeared in science is not known. The bowl-shaped outflow is the simplest...
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Why do we need a watch lovers forum?
This forum was created by the Alltime.ru watch online store specifically for its visitors to ask questions they are interested in (for example: “Will the Casio watch forum help me find the right one?”) And receive timely answers from our experts (for example: “Looking for special Casio watch - members of the forum and moderators will share original ideas with you!").
In the "Work of the store" section, people write who have studied all the watch stores, forums and communities in order to finally become our customers. We value and treat everyone with respect. good word or a fair remark made to us - for this there is a topic "Opinions, wishes, reviews". How nice to realize that our forum helps someone buy a watch! In turn, thanks to the topic "Issues of delivery, payment", we are doing everything possible to ensure that on the way of our...
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It has long been no secret that mechanical watches are the most "capricious" than quartz. Battery-powered watches are less susceptible to mechanical damage from impacts, and the recommended period for testing is once every 4-5 years.
But, nevertheless, quartz watches also have a number of their "diseases".
dead battery
The most common reason for a quartz watch to stop is a dead battery. Often a warning that the battery has exhausted its resources is the second hand, which starts to jump through several divisions. This feature is called EOL (End Of Life).
EOL is a special system that notifies the owner of a quartz watch that the battery needs to be replaced. In watches equipped with this system, about 2 weeks before the battery is completely depleted, the second hand begins to behave in a special way: it stops moving clearly every second, but waits for 4 seconds and jumps forward immediately by 4 (sometimes 2) divisions. Thus, the watch makes it clear that it is time to change the battery in it.
Sometimes the clock just starts to lag, but more often, it just stops.
In any case, when replacing the battery, it is better not to pull and replace it at an authorized service center with a guarantee for the battery and tightness.
Quartz movement board
The next disease of quartz watches is considered to be the power consumption of the quartz movement board. It happens that the board fails and starts to consume too much energy, thereby quickly disabling the battery. Several factors can lead to this failure:
- moisture got inside the watch case and corrosion formed on the board;
- a Chinese battery leaked;
- A dead battery has been in the watch for too long.
In rare cases, with such a breakdown, complete watch prevention helps, but often, you have to change the entire mechanism completely.
Woe master
Quite a lot of watch owners believe that they can cope with replacing the battery on their own, or they rush to the master close to home, without thinking about the consequences, the availability of knowledge and tools. As a rule, when buying swiss watches, consultants recommend service in service centers, and they recommend it for good reason. But, based on the statistics, in authorized workshops the flow of watches with broken tightness, torn coils and leaking batteries does not dry out.
Stopping the clock
Another reason for stopping a quartz watch, in addition to a dead battery, may be the need for preventive maintenance. The fact is that Swiss quartz watches consist not only of an electronic quartz block, but also of a mechanical analogue with a wheel system, in which, over time, parts wear out, dust and dirt get inside.
Watch shock resistance
Despite the fact that quartz watches can withstand small impacts well, it is not worth testing them for durability. In fact, according to GOST, they must withstand a fall from one meter onto a hard wooden floor. And, nevertheless, there are quite a lot of calls to the service center with damage from impacts. The result of a fall or impact is:
- displaced or broken hands on the dial;
- cracked quartz;
- broken teeth;
- broken glass etc.
All this, of course, leads to a stop of the clock or a breakdown of the mechanism.
Take care of your watch!
Tell your friends about us.
“Works like a clock” - is this expression true? After all, over time, the watch, like any device, can knock down its course. For each type of mechanism, there may be separate reasons for this. And before we carry the thing to the master or knock on it and shake it, let's find out in order - why the clock is ticking.
Why mechanical clocks break.
This type of watch is distinguished by a winding mechanism that must be wound regularly. In addition to stopping the spring winding, in most cases the cause of the failure is simple - clogging of the device. Dust constantly accumulates on its small parts, which prevents the accurate operation of the watch. Therefore, every 2-3 years the mechanism should be cleaned and lubricated. To do this, the easiest way is to take the watch to the workshop, although this procedure can be done independently.
Another unavoidable force acting on the clock mechanism is the attraction of the Earth. It is considered normal to slow down by 20-30 seconds per day. However, to minimize this error, a special device was invented - the tourbillon (see ""). It is usually used in expensive prestigious watch models. During the dominance of mechanical watches, tourbillon watches were the most complex pieces of watchmaking art, akin to masterpieces of jewelry craftsmanship. After all, this small detail, compensating for the influence of global gravity, brought humanity closer to victory over earthly gravity. But even the most expensive mechanisms have an accuracy of up to 5 seconds per day.
By the way, in no case should a mechanical watch be brought to a magnet. After such an interaction, the clock will stop forever and cannot be repaired.
Why do Quartz watches break?
Quartz watches are highly accurate, their accuracy is higher than mechanical watches. The reason for the failure of the quartz movement can be moisture ingress or shock (with the exception of moisture-resistant and shock-resistant), which often damages the microcircuit. In this case, a trip to the master is inevitable. Also, failure occurs due to battery wear. Usually not immediately, at first they are a few minutes behind. Everyone knows how to replace a battery.
In addition, quartz wristwatches are easily knocked off when static electricity hits the case. For example, when a woolen sweater or any synthetic item interacts with the human body, a discharge occurs. When changing clothes, it is transmitted to the chronometer and resets the readings. To avoid this phenomenon, you just need to remove the watch from your hand before putting on a sweater or other item.
Why does the electronic clock go off.
Electronic watches go astray in the same cases as quartz ones. In addition, this type of chronometer, like any other electronics, is vulnerable to the magnetic field that is created during the operation of household appliances around us. This impact is so great that it leads to a violation, and sometimes to a complete stop of the clockwork. Therefore, do not put the watch on the refrigerator, TV or microwave.
Esoteric view.
Adherents of esotericism talk about the influence of the human biofield on the operation of the clock mechanism. So, the clock being for a long time on a person’s hand, they seem to take over his energy and continue to follow his biorhythms. And without human energy, the clock weakens or stops altogether. Witnesses claim that they stop after the death of their master. And at the same time, they clarify: this happens with a watch on a bracelet made of natural material - leather or metal.
Those who care about time accuracy should consider purchasing a binary mechanism. Of course, this is not a “perpetual motion machine”, but failures in the operation of such watches are much less common than with other models.
Unlike mechanical Swiss watches, quartz watches are less capricious in operation and maintenance. They are less susceptible to mechanical stress, they need to be serviced less often, but even quartz watches can break under certain circumstances. Based on the statistics of calls to our service center, we can summarize the symptoms of quartz watch breakdowns and methods for their cure.
“And our love has run out of batteries…”
Yes, the heart of a quartz watch, a dead battery, is the most common cause of a quartz watch stopping. Watches signal this in different ways: sometimes the second hand starts jumping through the division, less often, the watch starts to lag behind, or immediately rises. The main thing here is not to delay, but to change the battery at an authorized service center, with a guarantee for the battery and tightness. In general, if the battery in the watch just sat down and it was qualitatively replaced, then the owner, as they say, has no problems.
"Voracious Pay"
After measuring the battery capacity, in a good workshop, the second step is to check the power consumption of the quartz movement board. Unfortunately, sometimes the board fails in Swiss quartz watches and starts to "devour" the battery. Usually such a breakdown occurs in two cases: either moisture got into the watch and corrosion formed on the board, or a Chinese battery leaked (or a dead battery was in the watch for too long). To begin with, the masters try to get by with “little blood” and make a complete prevention of the mechanism. It rarely helps, most often, a replacement board is required. Considering that for several years the ETA Swiss movement factory has not been supplying boards separately from the movement, in some cases a complete replacement of the movement is required. Expensive, but the owner gets a practically new watch and that very valuable experience. Of course, it is better to read this article in advance and not get into such a situation. In our service center for regular customers, a free leak test is always available. Before the swimming season, we always advise you to check the watch for leaks to prevent moisture from entering the case.
"Naughty Hands"
Just as there are many craftsmen who are eager to revive their favorite Swiss watches on their own, there are so many unfortunate “watchmakers” who are located “close to home”, “in a shoe shop”, etc., with an unprofessional tool in their hands. No matter how many watch manufacturers recommend contacting only authorized watch repair shops, the flow of Swiss watches with broken coils after a negligent battery replacement does not dry up. If the master is not able to give a clear reason for the failure of the watch after a series of manipulations and sends you to another workshop, the matter is not clean. But in a good authorized service center, the original coil of the mechanism can be replaced.
"The Clock Stops"
This common symptom usually indicates the need for routine maintenance: the watch needs to be disassembled, cleaned, lubricated with new oil, worn wheels replaced. The fact is that Swiss quartz watches consist not only of an electronic quartz block, but also of a mechanical analogue with a wheel system. Less often than in mechanical watches, quartz watches also run out of oil, wear out the wheels, and any mote can cause the watch to stop periodically. Routine maintenance at an authorized service center will easily solve this problem. We give a one-year warranty after prevention.
"Don't Hurt"
Swiss quartz watches are quite resistant to small bumps, but still you should not drop them. Shocks account for a third of calls to the service with a broken watch. Either the legs of the dial broke off, then quartz, even the teeth of the wheels are broken. The symptoms here are very different: often the dial shifts from the impact and presses the hands - the watch starts to stop, as the hands cling to the glass. In our service center, the owners have free diagnostics, during which the master determines the malfunctions and names the repair price.
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