I got this Rockford Fosgate bd15001 someone attempted to try to repair all transistors test good. I have unsoldered both pairs of red and black wires and tried to power up the amp which is still drawing 20A what should I look at next? Thanks!
You don't absolutely need a scope but that would be the best option. If you only have a multimeter, measure the DC voltage on both sides of all of the gate resistors and compare those voltages to the output of the SG3526 driver IC.
I don't know how much experience you have doing this. I'm assuming that you already measured the gate resistor for resistance and checked the PS FETs to see if any were shorted or leaking.
Ok Perry, I borrowed one out of another amp and now everything has 6.25V and I hooked up the positive wire and powered it on and it is still drawing 20A! What should I check next? Thanks!
Reinstall the drivers. Insert the limiter and power it up. Twist/push/pull the transformer being driven by the FETs that are heating up. Does the current draw change when you do that?