7546 7100 fixup

I bought another 7546 recently, knowing from the sellers description and pictures that it had almost certainly suffered battery leak damage:




and those words we watch tinkerers love:

"I do not have a battery either so don't know whether it is in working order. Therefore, selling as spares or repair."

Yeah, right.

:idisagree:


I was hoping the dial was ok, but from the sellers picture it was unclear whether that discolouration ring was on the underside of the crystal or on the dial.

I could also see that the date ring was damaged, and given there was no movement picture I feared the worst.

Still, at worst it should be good for a few parts.

When it arrived a first gentle test to set the day/date proved that the date ring was stuck solid.

Time to see what's inside .....

A major battery leak:




just look at those crystals




and here's the dial side




with a corroded date ring





and the PCB




and under the bridge




to be honest this was exactly what I was expecting. Now then, can we get this one working again?