HH s500d dc problem

[bobcat]

Hi all i have rebuilt both channels of an HH s500d but as mutch as i try i cannot find a reason for dc of 65v on the output checked and checked again all the discreets replaced the input op amp checked the 15v supply to the input op amp no damaged components visible can anyone help

 

[JonSnell Electronic]

Have you a schematic of the complete amplifier? What was wrong with it before replacing everything?

 

[JonSnell Electronic]

Is it the Mos output stage type or standard BDY type transistors?

 

[EssB]

ISTR it was a clone of the Crown DC300A built in a 2 or 3U 19" rack case.

 

[bobcat]

None of it worked and it is not mos fet its hh copy of dc300 and yes i have the schematic witch ill post