I have a ETA 7750 mvoement automatic chrongraph, for normal situation, when the second hand reaches the 60 second mark, the minute hand is not pointing to the excet mark min mark. The difference is up to 30 seconds slower. I am sure I set the hands excetly under a magnifying glass. So is it a problem? Do I need to return it for repair?
also, for 7750 movement, the accuracy is below about 15 seconds per day. Is it normal?
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dbssimon
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watchfreak
榮譽版面管理員   |
發表於: 星期一 2006-02-06 19:29
If this is a new watch, the accuracy is not good. Should fix it.
I do not understand your first question. |
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dbssimon
資深會員 |
發表於: 星期一 2006-02-06 19:34
I mean the second hand moves 1 round, the minute hand should move to the next mark, but the fact is that after some time, the second hand is not accurate.
say if i set the watch at 0:00:00, after few minutes, say 0:30:00, the minute hand is not pointing to '30' position, it is between 29 and 30. But I am sure I set the watch accurately to the mark excetly at the beginning. |
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watchfreak
榮譽版面管理員 |
發表於: 星期一 2006-02-06 19:38
this is not a problem, it is due to the "spacing" of gears, when your second hand starts to move, there is some "delay" before the minute hand moves. The most important is the accuracy of your watch. |
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dbssimon
資深會員 |
發表於: 星期一 2006-02-06 19:53
i think it is about 12 to 15 seconds each day. Do you think I should have it adjusted?
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watchfreak
榮譽版面管理員 |
發表於: 星期一 2006-02-06 19:57
new or old watch? if new, you should. If it is used, is better to keep it in this way, unless you want a complete servicing which cost some $. |
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dbssimon
資深會員 |
發表於: 星期一 2006-02-06 20:04
it is a new watch. watchfreak brother. thank you very much.
But sorry that I do not understand your second sentence. |
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watchfreak
榮譽版面管理員 |
發表於: 星期一 2006-02-06 21:37
I mean if this is a used(old) watch, and you still want to regulate it, you have to spend some $ to have a "complete servicing" of the watch. Complete servicing means dismentling, oiling...etc. 
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dbssimon
資深會員 |
發表於: 星期一 2006-02-06 22:55
it is a new watch. Does this accuracy mean the watch has problem ... or is it just regulated poorly only?
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watchfreak
榮譽版面管理員 |
發表於: 星期一 2006-02-06 23:05
both are posible. |
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