BOSS CE-4800D Parts or (Schematic)?

[Formas]

Guys greetings, I have a power to repair, customer says it was attempted after it first died but it seems they attempted the repair. However the parts doesn’t seems to be appropriate based on their arrangement. Can someone suggest power supply FETs and audio output FETs or a full or partial schematic? They had IRF540N in the PS and a mixture of P75N05 mixed batch in the output.

 

[Perry Babin]

What's the voltage rating of the rail capacitors?

Photo of the components to the right of the fan?

 

[Formas]

I’m seeing rail caps 3300uf @ 80V

 

[Perry Babin]

The attached diagram is pretty close to what you have. For the PS, I'd use IRF3205s with 47 ohm gate resistors. For the outputs, you might try the IRFB38N20D.