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Replacing balance a7750


TomThaMan

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Hi,

While doing some work on my a7750 movement I accidently broke my balance wheel. It needs to be replaced, but my question is; can I use a genuine balance wheel assembly which is easily found on ebay? Or can i buy a new a7750 movement to use for parts? The watch is a Seamaster from perfect clones.

Thanks!

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What part of the balance did you break? The wheel? A pivot? If you broke the wheel itself, then you will need a wheel and spring as they are a matched pair, which means you have to transfer the balance staff and rollers...difficult to do without a steaking set The issue if you go with a ETA replacement part, like a full balance complete, it may or may not work with the hole & cap jewels. Heck, I have found there are enough variants with the A7750's, you might have the problem as well!

Easy and cheap way would be to get it to a watchmaker that knows what he is doing...and his attitude. Some fo the old timers that have the skills to make things such as balance staffs from scratch wont touch a rep.

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