Question about Marantz SR-7200 Receiver

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Marantz SR 7200

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

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  • john1959 Apr 14, 2008

    i have a Marantz SR 7200, It shuts off after 9 minutes after turning it on.

    the standby red light remains on. I have tried removing all connections to see if it would eliminate this problem, this shut off. I have even pluged thr sr7200 into a different outlet in another room, i dont think the house wiring

    is at fault. Any ideas?

  • kndyapl Mar 20, 2009

    I turn the amp on and it goes on for approximately 4 sec. and then switches to standby. It smelled like plastic for awhile there.

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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.
Good luck.

Posted on Mar 29, 2009

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Possible Solution:
Your speaker cable end points are touching causing the amp to switch off to prevent short circuit.

Posted on Mar 20, 2009

  • kosta_75 Mar 20, 2009

    You may have speaker cables connected from the amp that are not connecting to a speaker and they may be touching. This may cause the amp to shut down.

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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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