Question about Sony STR-DE445 Receiver

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No sound in DVD mode

A family member was tring to play a CD and was pushing buttons now the display screen shows "unlock" for maybe 30 seconds.

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  • mtmtwo Dec 22, 2008

    I sent

  • Anonymous Apr 06, 2009

    I have the same problem.. I have no audio when in CD/DVD mode and then i get an UNLOCK error... never saw this before how do i get rid of it ?

  • mtmtwo May 11, 2010

    This problem is not fixed yet.

    Can't find ref. to "Lock or Unlock" anyplace in the owners book.

    If I can't Unlock this, can I reset to the factory defaults ? Will that remove the "Unlock" message ?

  • Shahid Electronics
    Shahid Electronics May 11, 2010

    UNLOCK procedure would be mentioned in user manual. Do you have its user manual?

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When i turn on sony receiver it will not play it just says protect on the screan

Posted on Mar 06, 2010

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