Question about Marantz SR-7200 Receiver
Dear all, When I switch on my Marantz SR 7200 A/v receiver, it comes on and then immediately switches itself back to standby. Please tell me what to do...This thing cost alot of money and I feel cheated that I should lose it just like that. Sincerely Gladys
It is likely that the PA stage has developed an offset voltage in the output stage. The faulty amplifier channel can be found by progressively disconnecting the collectors of the of the power transistors until the protection fault disappears. Once the faulty channel is found the the cause of the offset has to be traced to the faulty transistor or resistor. Don't forget that if you can smell smoke or burning then there are likely to be components(esp transistors) that have been damaged by the fault.
I had a Luxman unit that destroyed 5 transistors in the output stage that was due to an open .5W resistor in the driver stage.
Posted on Mar 29, 2009
Sounds like it is zapped (fried outputs). Time for a trip to the repair shop. Good luck.
Posted on Jan 29, 2007
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Posted on Aug 25, 2009
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Posted on Jan 02, 2017
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