Connect a pulldown resistor (wire to 100k will work) between the gate and source legs for one FET in each of the 4 banks. Pull the 4080 and confirm that you read that resistor value (including the gate resistor value, for some) at all FET locations.
If you do, power up the amp without the 4080.
Does it power up?
Does the amp have any DC across the speaker terminals?
Does it have any DC on any speaker terminals, referenced to ground?
If you do, power up the amp without the 4080.
Does it power up?
Does the amp have any DC across the speaker terminals?
Does it have any DC on any speaker terminals, referenced to ground?
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- Earthquake powerhouse d2 part identification.