Hi guys,
The amplifier stuck in Orange protect light, which stands for 'speaker wires are shorted to ground'.
They obviously aren't 🙂
SG2525A
Pin1: 2.56v
Pin2: 5.14v
Pin3: 0.02v
Pin4: 0.68v
Pin5: 2.05v
Pin6: 3.66v
Pin7: 1.97v
Pin8: 4.87v
Pin9: 6.01v
Pin10: 0.76v
Pin11: 0.068v
Pin12: GND
Pin13: 8.3v
Pin14: 0.12v
Pin15: 8.47v
Pin16: 5,15v
LM324N
Pin1: 9.95v
Pin2: 5.94v
Pin3: 10.31v
Pin4: 11.20v
Pin5: 1.36v
Pin6: 5.93v
Pin7: 0.05v
Pin8: 9.45v
Pin9: 0.12v
Pin10: 9.0v
Pin11: GND
Pin12: 9.02v (descending when probing)
Pin13: 8.92v
Pin14: 9.79v
The amplifier stuck in Orange protect light, which stands for 'speaker wires are shorted to ground'.
They obviously aren't 🙂
SG2525A
Pin1: 2.56v
Pin2: 5.14v
Pin3: 0.02v
Pin4: 0.68v
Pin5: 2.05v
Pin6: 3.66v
Pin7: 1.97v
Pin8: 4.87v
Pin9: 6.01v
Pin10: 0.76v
Pin11: 0.068v
Pin12: GND
Pin13: 8.3v
Pin14: 0.12v
Pin15: 8.47v
Pin16: 5,15v
LM324N
Pin1: 9.95v
Pin2: 5.94v
Pin3: 10.31v
Pin4: 11.20v
Pin5: 1.36v
Pin6: 5.93v
Pin7: 0.05v
Pin8: 9.45v
Pin9: 0.12v
Pin10: 9.0v
Pin11: GND
Pin12: 9.02v (descending when probing)
Pin13: 8.92v
Pin14: 9.79v
If there are no pulses on pins 11 and 14 of the 3525, pin 10 may be too high, shutting the IC down.
Last edited:
There are very small pulses on Pin11 and Pin14 of the SG2525. With a PWM duty cycle from about 2-4%
Any updates? I have same issue with amplifier, should I start my own thread Perry or can I hijack?
I prefer to keep the threads separate. You can include a link to this thread if you think it's relevant. I likely won't be much help except maybe generically.