Great news, I replaced Q10 and Q11 which were indeed open, and now... I'm back to square 1! At least it partially works again, and the transformer is fine, thankfully... So, back to the original problem, how should I go about finding the problem between Q3 and the CONT terminal (if your suspicion is correct)?
This is a fun learning experience, but I am very grateful for hidden fuses !
This is a fun learning experience, but I am very grateful for hidden fuses !
Oops! There is a fuse. You might get lucky. Placing a 60 W incadesent lamp in series with the mains can lessen damage when powering back up.
Check Q8, Q9, Q10, and Q11 for shorts with an ohmmeter. Does your meter have a diode test mode? Do you know how to use it and what it does?
I suspect your thumping issue is between Q3 and the CONT terminal. Right now, that's a secondary problem.