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Old 25 June 2017, 12:56 AM   #1
teb1013
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Change in Accuracy, Tudor BBB

Since I got it almost a year ago, my ETA Tudor Black Bay was running between +2 spd and +4 spd. In the last couple of weeks it has started to run at between +10 spd and +13 spd. There has been no change whatsoever in my use, I have it in rotation with two other watches, a Datejust and a Grand Seiko. The only difference is that, based on what I had read on this forum, I had let it run down in between uses rather than keeping it on a winder as I had done before. Is there any way that letting it run down has affected the accuracy? I wind it a full 40 turns before wearing it. I really don't feel like spending on service at this time. I just wonder why accuracy would change so suddenly and noticeably.


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Old 25 June 2017, 01:48 AM   #2
bdex75
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Could it have gotten magnetized somehow? How old is it? If you go to an independent watchmaker they may just be able to re-regulate it for you??


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Old 25 June 2017, 04:19 AM   #3
Blnrwearer
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If it's still under warranty, bring it in to check.
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Old 25 June 2017, 05:29 AM   #4
stock06sti
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My Tudor BBB was +7-8 when I first received it. I had it demagnetized and now its around +1-2 a day if that. Try that before service as most places will not charge you to do it and its done in a couple of minutes.
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