Quartz watch! Keeps losing time!

[bosstaki]

Hi guy’s! Looking for help please! I’ve been trying to get a watch running right for a friend of mine but its been to no avail! I’ve changed the battery twice now with brand new battery’s but it still keeps losses time, it’s lost 20mins in 12hours! The second hand doesn’t stick it ticks perfectly in all positions! I’ve checked the watch pulse with my Etic microtest 2000 & everything checks out fine! Ive checked it for being magnetised! Nothing! Any ideas guy’s!

 

 

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[TexasDon]

Loose canon pinion? Or a loose fitting minute hand?

[Vacherin]

12 hours ago, TexasDon said:

Loose canon pinion? Or a loose fitting minute hand?

Maybe time the second hand, is it spot on 60 secs per rotation? Perhaps check it's position exactly on the minute after an hour or two.

[watchweasol]

Hi Bostaki,  How is the old county,  It would be helpfull if you could post a picture of the movement and make and model as some of the older makes had trimmers, the newer versions use electronic inhibition in that the cpu monitors the pulses and either put in extra or takes one out as required to maintain the time if thats gone haywire its a movement change, cousins or HS walsh usually can supply most makes.  good luck in your quest                   Ex Tadcaster now Scotland 

[bosstaki]

Hi Bostaki,  How is the old county,  It would be helpfull if you could post a picture of the movement and make and model as some of the older makes had trimmers, the newer versions use electronic inhibition in that the cpu monitors the pulses and either put in extra or takes one out as required to maintain the time if thats gone haywire its a movement change, cousins or HS walsh usually can supply most makes.  good luck in your quest                   Ex Tadcaster now Scotland 

here’s the watch mate, but I’m not sure what the movement is! I’m at work! I’ll pop the back off later and take a look at the moment mate! I’ll let you know!



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[AndyHull]

Your issue sounds like a similar problem to this-> https://www.watchrepairtalk.com/topic/10515-raymond-weil-95145/

I think a lot of the advice there applies here too, so run through the suggestions there.

The issue may be purely mechanical or alternatively electronic. 

I would check the battery contacts are clean, and that there is no obvious sign of corrosion anywhere, then inspect the module very carefully for hairline cracks and damaged solder joints.

It doesn't take much with the very low power levels involved for things to get out of whack. A loose connection on one end of the crystal, or moisture damage or a crack to one of the resistors or capacitors, and things get strange when they cool down or warm up. 

If you have access to an oscilloscope, things get a lot easier, but assuming you don't, then start with those suggestions first and we will see if we can get to the source of the issue.

Does the movement loose an exact amount per day, or does it vary. Do you have access to a time grapher, (or time grapher software on your PC or phone, for example -> https://tg.ciovil.li/

A time grapher will let you see exactly what affects the rate of the watch (position, temperature, vibration etc). I'm assuming that the movement in question does actually autibly tick. Some quartz movements are so quiet that you would struggle to get the microphone to hear them, and others sweep without ticking.

If the thing is silent, then you would need an oscilloscope to "see" what the movement is doing.

 

 

Edited January 8, 2019 by AndyHull

[bosstaki]

here’s the watch mate, but I’m not sure what the movement is! I’m at work! I’ll pop the back off later and take a look at the moment mate! I’ll let you know!



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Hi the watch movement is a ISA 307


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[rodabod]

16 hours ago, Vacherin said:

Maybe time the second hand, is it spot on 60 secs per rotation? Perhaps check it's position exactly on the minute after an hour or two.

This is good advice, and a simple test to confirm if the train is stopping rather than an issue with the motion works and the friction coupling for hand setting. 

[Nucejoe]

Looses 20 min/ 12hrs ,  Dose so on bench only? Or on wrist ? Both?

What dose timing the seconds hand show or prove? If it looses 20 min per 12 hrs, the seconds hand will show loss of 100 secomd per hrs. So how would help diagnostic.. Or have I misundertood your meaning?

And if the seconds hand is the suspect, just remove it and observe.

which one is who.

Edited January 9, 2019 by Nucejoe
20min/ 12hrs, observed for one day only? Loose hand then 20 min may alter.

[AndyHull]

3 hours ago, Nucejoe said:

Looses 20 min/ 12hrs ,  Dose so on bench only? Or on wrist ? Both?

What dose timing the seconds hand show or prove? If it looses 20 min per 12 hrs, the seconds hand will show loss of 100 secomd per hrs. So how would help diagnostic.. Or have I misundertood your meaning?

And if the seconds hand is the suspect, just remove it and observe.

which one is who.

If you time the thing on a time grapher, then you may see a pattern over time, so it may form a straight line with a jump at regular or irregular intervals, or the time grapher may show that it runs at a constant, but slow rate, or the rate may vary in a sinusiodal manner.

The graph can reveal which part of the system is the most likely source of your error.

Having said all that, the movement is not particularly expensive, so you might find that simply replacing it is the least time consuming and painful option.

Edited January 9, 2019 by AndyHull

[watchweasol]

Hi   looked up the movements  cousins    obsolete   HS Walsh non  listed  AG Thomas in Bradford have listed ISA 307 s @ £7.75 might be worth a go and movement swap then play with the old one, probably the cheapest option. Thats what I would do as I have played about with quartz watches only to have wasted time and end up changing the movement .......   best of luck