Hi, the 12V oscillator circuit quit, and I suspect it is the final power transistors, but can't find adequate documentation
or a cross for them. The transformer and other voltages check out ok. Unit runs fine on 110V. I've found several different circuit diagrams for this model, none of which is right (and have read that Norcold used some 20 or 30 variations over the years). Original equipment
on my 1986 Grand Banks trawler
, currently in Vero Beach.
Anybody have an old semiconductor book to look these up?
On the circuit board in positions T01 and T02 they are each a TO-220AB package marked K532 6D on the face.