Rockford Fosgate T20001bd

Pic 1 is of Q405 scope set to 5us 2 volts Div

Pic 2 is of Q419 scope set to 5 is 20 volts Div
 

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With black probe on drain of Q419 and red probe on source of Q428 without jumper I get -103.7
Black probe on ground red probe on source of Q419 I get 103.8

Black probe on ground red probe on source of Q428 I Get 0.00 volts
All of these readings are with jumper removed

With jumper in place I get
Drain to source -101.7

With black probe on ground and jumper in place I get 103.1 on source of Q419

I get 52.1 volts on drain of Q428 with black probe on ground

hopefully I did this right if not what measurements do you need ?

I also noticed I get 1 volt of DC on pin 1 of all opamps that sit behind rca jacks and I removed jumper and get distorted audio still

Also the mesh’s board for Q419,418,428,427 has something soldered to TC5 which I’m assuming is for bias .

Q412,411,405,404 both of those Kesha boards don’t have anything soldered to them is this normal for this amp or is it missing ?
 
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