I got this amp in for repair. The problem im having is the Output thats outlined has 22 volts on the first leg and 22 volts on the second leg and 0 volts on the 3rd leg . The driver thats circled has 26 volts on all 3 legs And the resistor that connects to the driver gets so hot it desolders itself from the board.
Any ideas on where to begin looking?
Any ideas on where to begin looking?
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It may not be reading it correctly. It's next to Q207.
Left to right, what are each of the output transistors (TIP35/36)?
Left to right, what are each of the output transistors (TIP35/36)?
If i put a tip 35 in the fourth spot the amp will draw excessive current.
How do i tell on which output goes where?
How do i tell on which output goes where?
The collectors of all of the 35s should be connected together. The collectors of all of the 36s should be connected together.
ok in the fourth spot it has positive voltage on middle pad and thats connected to the middle pad on the other tip35 so im guessing the 4th one is suppose to be a tip 35.
Theres no Q207 in this amp either.
Theres no Q207 in this amp either.
Now you're back to checking the driver transistors in that channel. Also check the bias transistor (Q207).
Bias transistor (C3200)
1-2:OL
1-3:OL
2-3:32.41K
Probes reversed
1-2:OL
1-3:0.620 and meter goes crazy up and down with readings
2-3:23.90K
Does this apper to be defective?
1-2:OL
1-3:OL
2-3:32.41K
Probes reversed
1-2:OL
1-3:0.620 and meter goes crazy up and down with readings
2-3:23.90K
Does this apper to be defective?
It doesn't look normal. Either pull another one and compare or post the same thing on diode check.
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