Ronda Quartz Chronograph Help Required

[jaycey]

I bought the Mrs a Tag Heuer F1 Quartz Chrono some time ago and it has the Ronda 5021.D chrono movement.

 

Just recently it started just stopping. Whilst it was stopped if I started the chronograph it would start running again and be alright for a few hours, then stop again.

Now it is running but losing 10 minutes or more per day.

It isn't doing the stuttering seconds hand to indicate low battery life so I don't know whether it's worth just replacing the movement or service it.

 

Any thoughts guys?

[WillFly]

The movement will cost you just under £30 from Cousins - plus postage of course - so that might be a better proposition than trying to diagnose and then repair it.