It seems half of the power supply is working correctly, but the other half has a possible short somewhere. With a 5 amp fuse inline with +B and only 1 FET on the Q5-Q8 (Q9-Q12 empty) side it will pop the fuse instantly. If I have 1 FET installed on the Q9-Q12 (Q5-Q8 empty) side it will power up green light and all. I started playing around trail and error style, and removed all the transformer leads for Q5-Q8. I also removed +B so only ground and REM power connected. With 1 Fet on both sides (1 on the Q5-Q8 side and 1 on Q9-Q12 side) installed the voltage to the gate on the Q5-Q8 side is ~2.3v if I connect the transformer lead back to the board the voltage jumps to 6v then it gets hot.
I have attempted to find this "short", but everything I've tested seems to be OK. I have even gone to the extent of removing the transformer to test the leads which i didn't find any shorts weird resistance readings. Tested Q17/Q20 (and they were replaced with new), have also tested D16, and i'm not fully sure how to test a switching diode for D15. U14 voltage on pin 13 was 5.45 and pin 16 was 5.30. Pretty sure I'm overlooking something, or not doing something correctly.
I have attempted to find this "short", but everything I've tested seems to be OK. I have even gone to the extent of removing the transformer to test the leads which i didn't find any shorts weird resistance readings. Tested Q17/Q20 (and they were replaced with new), have also tested D16, and i'm not fully sure how to test a switching diode for D15. U14 voltage on pin 13 was 5.45 and pin 16 was 5.30. Pretty sure I'm overlooking something, or not doing something correctly.