Tested as suggested - After 5 mins I connected remote and still a red light only
Replaced C74 with 10uF 16V; On Q18 the base voltage is 0.65V on both Emitter and Collector, the voltage is 0V. The supply and remote voltages are both 12.32V (I am using a bench top PSU to supply the Amp)
Thanks
When you remove R195 you actually completely detach the protection, so the red-led doesn't work.
In my opinion, based on the tests you did by removing Q17 and R4, the problem may be in the protection itself.
We need to narrow it down.
Now unplug R44 and then R45, one at a time, and check when the amplifier is working fine.
In my opinion, based on the tests you did by removing Q17 and R4, the problem may be in the protection itself.
We need to narrow it down.
Now unplug R44 and then R45, one at a time, and check when the amplifier is working fine.
When R44 and R45 were removed (one at a time) the amplifier still showed a RED LED and did not power up. The funny thing is that if I bypass R197 for a few seconds, the power supply will turn on.
Note: this fault started when my friend shorted one of the outputs. It was shorted so bad that the plastic of the speakers connector melted.
Note: this fault started when my friend shorted one of the outputs. It was shorted so bad that the plastic of the speakers connector melted.
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