Question about Sony STR-DG500 System

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Lock up I found a new sony str-dg500 6.1 channel reveiver on ebay and they said that when the power comes on it goes straight into protect mode.I was wondering if that is fixable??

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  • apoloniomadu
    apoloniomadu Jul 13, 2012

    I have the same problem. protect mode and I can't figure out the solution

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Make sure the amp has good ventilation, mine did it through overheating...

Posted on Oct 04, 2009

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It probably is but may require a service person to physically open the unit up and do some testing/repair work which can be expensive if you dont know somebody or have the skills yourself.

Posted on Nov 09, 2007

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1 Answer

My Sony str de335 is in protection mode speakers are unhooked how do I get it out of protection mode?


if you disconnected everything and it still goes into protect, the most likely there is a damaged amp channel that will need to be repaired.

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When iturn on my Sony STR-DE325 it goes into protect mode


Try disconnecting all of your speakers, and then turn on you unit. If you have a defective speaker, or a short in your wires, your unit will go into protect mode. If your unit seems ok with the speakers disconnected, then turn unit off, hook up one of the speaker leads and try it. This way you can isolate the problem.......

Good Luck,

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I went through the amp/receiver and used small star washers on all the grounding screws I could find including the one securing the transformer, cleaned dust off all circuit boards, checked output transistors and fuses, all OK.

Re Assembled unit and it worked OK.

I will buy a fan and fan it to avoid sourcing heatsinks for the previusly suggested IC's.

Thanks for the technical help, sure solved my problem.

Regards

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