Frozen Chrono Second Hand On Iwc Portuguese

[doug]

My IWC Portuguese chrono from EL has worked fine since I received it, but yesterday when I started the chrono, the sweep second hand stopped dead at about 11 just before coming up on the 2nd minute. In fact, the whole mechanism shut down, the running seconds hand at the bottom also frozen in place. I pushed the top button to "stop" the chrono, even though it was already not moving, then hit the reset. Nothing. Did this a couple more times, and the second hand began moving again; ditto the running seconds subdial. Seems to run fine now, though I am reluctant to try the chrono again.

Anyone out there have any ideas as to why this happened/what happened? And perhaps what to do/not do to prevent it from happening again.

Thanks.

[jkerouac]

Very sorry to hear about your problem. It sounds like your modified 7750 is acting up.

Review this The Zigmeister thread. It may explain the problems you are having:

The Zigmeister's dissection of a Portugese 7750

[doug]

Thanks for the link, jack. I read The Zigmeister's post and subsequent replies. Too bad I didn't find these before I bought one of these. Whatever, the watch seems to be running fine now. In the non-chron mode. So maybe I'll just leave it like that and hope it continues to run.

[chrono903]

wow, an asian 7750 acting ip. That sure is an anomoly.

Sorry couldnt resist. My daytona took a dump on me about 2 months ago. even so i would buy another. good luck and i wish i had some contribution better than comic relief but i dont. those are really nice watches. i am sure any decent watchsmith can fix it.

thom

[thomasng]

Thank goodness I passed on these. I was fearing the seconds @6, despite having a good record with 2 Dyatonas and 7 or 8 other Asian 7750s.

[robertk]

Mine has been running regularly for the past months. chrono's get used regularly. No problems.........so far.