Phew!
I opened my watch case and was worried to see a blank display on my Certina Chronolympic (ca. 1977).
The chances of finding a replacement module for this are low to zero so if a new battery didn’t revive it, it was toast.
I rummaged through my bits and bobs bin and wahey, I found a new Renata 390.
I couldn’t get the back off quickly enough! So, battery in place and back secured I nervously turned it over to see the result. LIFE – the display was working and the watch ready to set. Many sighs of relief.
It’s in lovely condition considering it’s 47 years old.