teddy25 0 Posted April 6, 2012 This is my Omega speedmaster with Seagull ST-1902 movement: http://www.rwgboard....showtopic=27221 My first omega speedmaster had an issue with the chronograph. The (long seconds hand from the chrono did not reset back to zero. I received a new movement and here the same issue happend after ~25 times of usage. I will now try to explain the problem and hope to get advice from other users or watchmakers. This is the problem: - Initialy the movement is good and large seconds hand is exactly at 12 postion - first ~25 resets the hand jumps to 12 postion (note: I never reset the chrono outside the 11 till 1 range) - After ~26 resets I saw the hand stopping at +1 second - 27 resets = +1.5 seconds - 28 resets = +2 seconds - 29 resets = +2.5 seconds - 30 resets = +3 seconds etc. I was only able to get the hand back to 0 by reseting multiple times with the hand at ~ 45 seconds. At the moment I do not use the chrono because I know it will be immediately back with an offset problem. Some users reported same issue. Sometimes it was caused by a loose spring by the reset lever? Other reported a loose screw under the H bridge. Other reported that it is an adjustment issue inside the movement (not tight enough reset brake?) Are there instructions how to check all these things? Thanks in advance. Share this post Link to post Share on other sites
