I have this amp in for repair I opened it up and noticed the power supply is blown.
There are 8 power supply fets in this amp 4 of them are IRF3205"s
The other 4 have markings ive never seen.
500 12L4
1R 837D
59 40
Are theese 3205's as well or is there a part number for theese??
There are 8 power supply fets in this amp 4 of them are IRF3205"s
The other 4 have markings ive never seen.
500 12L4
1R 837D
59 40
Are theese 3205's as well or is there a part number for theese??
I fixed the Dc on the outputs. Amp powers up and relay kicks on but no output.
I checked and its producing + - 63 volts on the outputs (rail voltage)
I have 15 volts on pin 4 of 2 op amps but not on pin 8
Other op-amp has no voltage + or - 15 volts
The op-amps i tested are the TLO72's
I swapped the board behind the rca jacks with another one .
Still same thing.
Wondering what controls the 15 volts on pin 8 of the op-amps and why doesnt one of the 3 op-amps have voltage on pin 4 or 8?
I checked and its producing + - 63 volts on the outputs (rail voltage)
I have 15 volts on pin 4 of 2 op amps but not on pin 8
Other op-amp has no voltage + or - 15 volts
The op-amps i tested are the TLO72's
I swapped the board behind the rca jacks with another one .
Still same thing.
Wondering what controls the 15 volts on pin 8 of the op-amps and why doesnt one of the 3 op-amps have voltage on pin 4 or 8?
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