Question about Yamaha DSP-A3090 7-Channel Amplifier
Had a very similar problem on a DSP-A1092, found to be the temperature sensor on the heatsink open circuit. I fitted a variable resistor to mine and adjusted it to just below the specified resistance of the temp sensor (I had the service manual at the time). Permanently cured the fault. As the amp never ran hot,it was not a problem if well ventilated. Of course it could also be shorted speaker wires at any of the outputs too.
Posted on Jan 01, 2011
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Posted on Jan 02, 2017
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