ROCKFORD FOSGATE T600-4BD FLASHING THERMAL?

I'm working on a t600-4 that had a down ps and a channel of outputs. Once I repaired the ps, and the channel the amplifier powered up OK and played clear audio on only 2 channels. The other two were just distortion. So I pulled all the outputs and replaced them with known good transistors.
Now the amplifier will power up, yet the yellow thermal protection led is flashing and the amplifier draws 2amps at idle and up to 4amps as the led flashes?
Ideas?
 

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