PPI Amps

I recapped one of the customers amps so far .

He just brought me 2 more amps to replace the caps I already told him once again that the caps are fine and it’s just a waste of money .

But he insists on having them recapped .

I don’t think I rally made that much on the first amp .

Just wondering how much should I charge to recap both of these amps ? Say the parts come to $50 for all the caps and heatsink compound.

The amps are MOS25 and a MOS425
 
Anyone have pics of the board for the MOS425?

There is a wire that wasn’t soldered in the board labeled ground on the preamp board .

I need to know where is solders into the main board
 

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