From my 1992 SC400: OEM Nak amplifier (from the trunk).
There are some burned components (looks like capacitors) on the amp's circuit board, and board was burnt, too (see photos).

So, if you are good at repairs, here's your chance. Or maybe you can salvage other parts from mine to repair yours.
You can pick up at my house in Orange County, CA (near where the 91 and 57 freeways meet) , or I can drop off at my local UPS Store (or FedEx or Mailboxes, etc.), and you can arrange the packing/shipping details with them (6 pounds).

I don't conduct business on public forums. Show some class - send me a PM. And stop with the "PM sent" replies, you post-wh0res. Bottom of circuit board
Top of circuit board