220 ohms.
This problem can be caused by a shorted transformer or by having the positive speaker output wire shorted to ground.
This problem can be caused by a shorted transformer or by having the positive speaker output wire shorted to ground.
Not by itself but I've seen quite a few amps come in with this resistor burned and the SG3525 blown.
Post the DC voltage on all pins of the 3525 if you can't determine why it's not powering up.
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
Pin 9:
Pin 10:
Pin 11:
Pin 12:
Pin 13:
Pin 14:
Pin 15:
Pin 16:
Post the DC voltage on all pins of the 3525 if you can't determine why it's not powering up.
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
Pin 9:
Pin 10:
Pin 11:
Pin 12:
Pin 13:
Pin 14:
Pin 15:
Pin 16:
Pin 1: 0
Pin 2: 0.50
Pin 3: 0
Pin 4: 0
Pin 5: 0.21
Pin 6: 0
Pin 7: 0.18
Pin 8: 0.73
Pin 9: 0.50
Pin 10: 0
Pin 11: 0
Pin 12: 0
Pin 13: 11.88
Pin 14: 0
Pin 15: 11.88
Pin 16:0.50
Pin 2: 0.50
Pin 3: 0
Pin 4: 0
Pin 5: 0.21
Pin 6: 0
Pin 7: 0.18
Pin 8: 0.73
Pin 9: 0.50
Pin 10: 0
Pin 11: 0
Pin 12: 0
Pin 13: 11.88
Pin 14: 0
Pin 15: 11.88
Pin 16:0.50
The lack of 5v on pin 16 makes it appear to be defective. The problem could be the 3525 or something connected to pin 16 dragging the voltage down.
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