avilev995 0 Posted October 19, 2019 Hey All, The movement 7750 inside my JF Daytona started to make winding problem. So I started to think about changing the movement itself, I not familiar with all movements to be honest so I need your help I would be happy if the movement has a chronograph. I would be happy if the movement has a second hand at 6h. I just want to make my watch work again. Big thanks, and have a good day! Share this post Link to post Share on other sites
Amguy1 2 Posted October 19, 2019 Mine has the same issue. Stopped auto winding Sent from my iPhone using Tapatalk Share this post Link to post Share on other sites
avilev995 0 Posted October 19, 2019 2 minutes ago, Amguy1 said: Mine has the same issue. Stopped auto winding Sent from my iPhone using Tapatalk I will never buy 7750. I have another Daytona that cost me 75 dollar, which works over 1 year without any problem. but I paid expensively for that 7750 and its sucks xD Share this post Link to post Share on other sites
NCRich 13,714 Posted October 19, 2019 22 minutes ago, avilev995 said: I will never buy 7750. I have another Daytona that cost me 75 dollar, which works over 1 year without any problem. but I paid expensively for that 7750 and its sucks xD You have learned a valuable lesson grasshopper. Share this post Link to post Share on other sites
GenTLe 1,485 Posted October 19, 2019 12 hours ago, Amguy1 said: Mine has the same issue. Stopped auto winding That's an easy fix (if you are able to put your hands in the 7750 and mount it back, which is not that easy per se...). Either you got the reversing wheel to clean or the "ratchet wheel driving wheel" (part 1482) with the pinion gear fucked up. The first one is easy, you just need to clean it. The second is a bit different as you need to get a gen 7750 1482 and then file the gear final points to the right size (or replace the jewels where they end with ones with larger holes). Share this post Link to post Share on other sites
GenTLe 1,485 Posted October 19, 2019 12 hours ago, avilev995 said: Hey All, The movement 7750 inside my JF Daytona started to make winding problem. So I started to think about changing the movement itself, I not familiar with all movements to be honest so I need your help The JF has a modified 7750, best option is to find another one made the same way: https://www.ebay.com/itm/223698538333 Then you need someone able to replace the hands and dial without ruining them. Share this post Link to post Share on other sites