Hi all,
I'm new to this site where I have seen there's a lot of information about Pioneer classic SA9100 amplifier. I'm in the process of repairing one which came to me with many parts blown and burned in right power amplifier, and had been badly recapped, some electrolitic capacitors replaced in the wrong position in power supply and protection circuit.
After replacing bad parts and reversing capacitors to the right position, at power on nothing burns nor shorts, but protection lihgt stays solid red. I have tested power supply and protection circuit voltages according to the indications given in some previous threads in this forum, all voltages are good except in awr-025 (protection module) pins 1 and 3, those sould be 0 volts and are actually about 40 volts.
My question is, that means some failure in protection circuit, or means the normal condition of pins 1 and 3 when protection is activated?
I'm new to this site where I have seen there's a lot of information about Pioneer classic SA9100 amplifier. I'm in the process of repairing one which came to me with many parts blown and burned in right power amplifier, and had been badly recapped, some electrolitic capacitors replaced in the wrong position in power supply and protection circuit.
After replacing bad parts and reversing capacitors to the right position, at power on nothing burns nor shorts, but protection lihgt stays solid red. I have tested power supply and protection circuit voltages according to the indications given in some previous threads in this forum, all voltages are good except in awr-025 (protection module) pins 1 and 3, those sould be 0 volts and are actually about 40 volts.
My question is, that means some failure in protection circuit, or means the normal condition of pins 1 and 3 when protection is activated?