Re: Again a 7854 power supply beast to be repaired...
If the +130v supply is good, check the voltage on Q173's base. It should be 82vdc.toggle quoted messageShow quoted text
If it is low check C171 for leakage. If C171 is OK, check CR177, CR173, and Q173 for
leakage and shorts. Then check all the R's around Q173.
5) With another scope I checked the output of the Z-axys board (board A21,