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Posted

Received a watch today fitted with an eta 954.111calibre quartz movement .

I fitted a new Renata 399 battery but it is running really erratically , it goes along fine but then visibly speeds up .
Would it be something that a service might cure or is there something more to it.

As i say it's not running fast all the time but then it just it just seems to have a funny turn.

It was running better i think with the case back off , so i did put a small piece of plastic over the battery just incase it was shorting or something but that doesn't seem to of made any difference.

Any thoughts most appreciated guys TIA Andy

Posted

Hi Andy,

 

Sometimes the hands touch each other at certain points if they are not completely "horizontal"/"parallel", or the dial is pushing the hands up (became loose), or the hands are touching the crystal for some reason...those are the easy fix options: redo/press/push down/etc the hands or/and the dial. Otherwise I'd look for some worn or broken gear, bent pivot if the problem is cyclic. Electrical issues may happen with a bad connection/loose solder. IMHO.

 

Cheers,

 

Bob

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Posted

Recently serviced a 954.111 movement. There aren't that many gears in this movement? Maybe it could be some thing with the stepping motor. You could lift the rotor out and clean it with rodico. I haven't finished my watch as i am having a problem with the date ring? It's worn and won't shift properly? Saving the movement though. As they are rare and hard to find this days. 

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Posted

Thanks guys.

Well after gaining around 9 mins in a couple of hours it didn't gain anymore overnight , so reset this morning and so far it is keeping good time , so it appears to of settled down.

Will keep an eye on how things go , but i think whilst it is running ok i'm inclined to leave it .

cheers Andy

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