ST19 - Minute Counter - Won't reset

[rawbaws 91]

I recently purchased a Speedmaster with an ST19 hand wind chrono movement. Love the watch.

 

The chrono was functioning perfectly for the first couple of weeks (not that I used it all the time).

 

On one use recently however when I re-set the chrono, the minute counter didn't reset to 0.

 

Now, when I reset the chrono, the minute counter doesn't resent AT ALL.

 

Fortunately, the minute counter still functions perfectly which means I can run the chrono for 30 minutes until it ticks over to zero, stop it, reset the second counter and all is good again so it is probably not something I am looking to repair as such but just wondering if it is a common problem or if anyone has an idea what would cause it.

[10:10 Watch Repair 1]

flyback lever spring

and no, you can't get parts for it, unless you're very lucky.

[rawbaws 91]

Thanks, fortunately it is still possible to reset to zero.. just takes a while... chrono still functions normally so all in all it probably isn't the worst thing to break