I have a Sansui 550 Classique amplifier -need help
My Sansui 550 Classique amp will not turn on, just humming sound and we have blown multiple fuses. Now even when replacing the fuse we get nothing.
We’ve checked the speaker wires. Receiver turns on. Amp shorts out after a crackle-hum sound.
any advice for repairing this?
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2 comentários
thanks for the advice…quick question:
I haven’t opened up the amp yet and have never done this before, so, how do I tell which capacitors are bad? or are you recommending to replace them all? is there some type of tester I should get?
por Nancy S Allen
@nancyallen If some of them are bad, there's a good chance that even if the others are okay right now, they will die soon.
As a general rule of thumb, I would replace them all.
There are testers for capacitors (some test the capacitance, and others test the internal resistance, but neither always are out of spec for them to be bad)
I'm assuming you know how to solder (and desolder components) if you're considering opening it.
Also be careful by any large capacitors, they should be discharged before desoldering, which can be done by connecting both terminals to a low value resistor with two wires attached. Something like 10 ohms should do the trick.
Hope that helps, and I hope your repair goes well!
por Alec M