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Question about Sony STR-DE525

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Sony STR-DE525 Protector mode

Howdy, I have a Sony STR-DE525 that faults to protector mode when turned on. I have located a2 blown output transistors and a burnt resistor (R527). The resitor is too discolored to get a code but reads 7.1K with a meter. Can anyone confirm this is the correct value? I would also appreciate any tips as to other components to check before ordering replacement parts. Any and all help is greatly appreciated.

Thanks, Gary

Posted by Anonymous on

  • 1 more comment 
  • Anonymous Sep 25, 2008

    Howdy, thanks for the link to the print. I have the value of the resistor now. I have checked the two lg caps and all output transistors. Could anyone point me to any other components to check before ordering parts.

  • Anonymous Sep 25, 2008

    I was trained as an electronic but have not worked in the field for many years. I have all of the necessary equipment and skills. I am just looking for someone with experience repairing this problem with the Sony STR-DE525 as it seems to be a frequent repair.

    Thanks, Gary


  • Anonymous Sep 25, 2008

    I have two blown transistors and one burnt resistor (Q506, Q507, R527) . I do not see any other components bad that are in the vicinity of these parts. Amp board is $116.00 + shipping, transistors are 4.25 each. I would rather order just what is needed and save $100.00 (if possible).

    Thanks, Gary

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Anonymous

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Hi,
Download service manual of STR-DE525 here and fix your receiver.
Must download all 4 files at web site.
Need further help, let me know.

Posted on Sep 24, 2008

Testimonial: "Thank you for the print. amp is back in working order!"

  • 1 more comment 
  • Anonymous Sep 25, 2008

    To repair an Amp or receiver is like step by step job for amature. Order new parts, replaced them and check result.

    How about rating solution?

  • Anonymous Sep 25, 2008

    Alright, let me know your finding of bad components with circuit codes like Rxx, Cxx and Qxx etc.

  • Anonymous Sep 25, 2008

    Just a suggestion, why dont you replace Amp Board completely?

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Dan
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