I just purchased a U1000 from Watchbuys about 10 days ago. I believe my watch is part of the “retirement” shipment for this model. I have had a long term positive experience with a U1, and I was basically motivated to buy the U1000 because it was being retired and I’ve always wanted a Sinn chronograph. To get this watch, I sold three watches, including a Seiko Spring Drive Tuna that has always been utterly reliable.
Since I have had the U1000, it has been running great, about +1 second per day on the wrist, and I’ve used the chrono about a dozen times with no issues.
Tonight I used the chrono, and two issues surfaced: first the 60 minute chrono hand did not change when it should have after the center sweep passed the 12 position; then the hour totalizer hand moved to the one hour position after 28 minutes. I had noted the time when I started the chrono, and the minute chrono hand never moved during the 28 minutes. Just to try something, I stopped the chrono, reset the chrono, stopped the movement, and tried the chrono again several times. The chrono minute hand never moved.
So far, I had only worn the watch in an office environment, no bumps or drops of any sort.
I am going to contact Watchbuys about warranty help next week, but I am really, really disappointed at this point...right now, I very much regret this purchase.
Has anyone here had a similar problem with their U1000’s chrono operation?