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Marantz SR-7200 Receiver - Page 9 Questions & Answers
Marantz SR5200 Turns on and off by itself
Thermal cutoff is operating. There is excessive heat being generated on the heat sinks of the Amp. This happens when there is a shorted output transistor or a speaker load changing.
I have a marantz st100 receiver, and everything
It could be a burned out resistor in the main power amp. Follow the channel wires from the speaker that is playing up till you get to the power amp. Look around for anything odd. Compare it with the other channels, as they are good.
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