Crunch 1000.1D amp

[Hi Speed]

Hi all

I have this crunch amp, (1000.1D) whit lose amp section outputs mosfet Q181,182,171,172,161,162, If anybody have a reference like sch or have a model like this and tell me what are the respective positions of this parts, I know is irfz640 - 9640,

I use irf640 Q181-182 and irf9640 Q171,172,161,162, but the amp go to the protection mode because have -62 volt in the output for a short period it shutdown the PS rails,

I seeks the + - rails to positions the mosfets,

[Perry Babin]

If no one else has any information, post a photo of the inside of the amp.