pcrosewood
Active Member
Just recently picked up a au-5500 and found that the relay isn't clicking in. Certainly could use some help in figuring my next move to try to find the reason .
Sansui au-5500 stuck in protection mode
- Thread starter pcrosewood
- Start date
What have you checked so far? Something in an amp channel is toast.
More information would certainly be helpful as well, you didn't exactly give a lot to go on.
More information would certainly be helpful as well, you didn't exactly give a lot to go on.
pcrosewood
Active Member
So far I've cleaned all the switches with Deoxit. Blew the dust out of it. Replaced one of the 4 fuses on the main power board. I also gave a good visual and resoldered any questionable looking spots. I cleaned the contacts on the relay with Deoxit.. The red power light comes on but nothing happens. I did find a couple points where I got a reading 35.2 volts on my DMM.
Out of the amp board before the relay, what's the offset of the amp channels?
pcrosewood
Active Member
I would need help to find a point where I could get that reading.
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Where the two emitter resistors for the outputs meet....you may be in over your head.
Diode check the output transistor that was on the rail that the fuse blew on, I'm sure that's the culprit.
