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Denon AVR-1508 Standby Issue

When I turn the receiver on, it stays on for a couple of seconds, then it immediately goes into standby with the power light flashing quickly. It has been working fine for weeks and I removed all the speaker wires and set the whole receiver up on a bare counter with just the power cord attached and the receiver is still having the issue. Please help!

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  • 2 more comments 
  • Lexle May 15, 2008

    My Sherwood R 500 receiver goes to standby after a couple of seconds of turning it on. Nothing is connected to it right now.

  • dortmundb Aug 18, 2008

    I have the identical problem.

  • Anonymous Oct 22, 2008

    the red standby light flashes after my avr 1508 has been on for a little while

  • Bostonyj7 Oct 22, 2008

    my red standby flashes and the tuner shuts down after alitle while of playing. I reset by turning it off and back on again. This sucks

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  • 4 Answers

The problem is with one of the Channel power transistors. I have the same problem I am searching to find out how to test them to find out wich one is bad.

Posted on Jul 10, 2009

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Posted on Jan 02, 2017

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SOURCE: Denon AVR-1508

sounds like overload protection
turn the volume all the way down, then turn it on
if that doesn't do it you may have a short in one of the speaker lines - try disconnecting them one at a time

Posted on Jan 13, 2008

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Not familiar with this model but seems like the protection circuit is kicking in, this could be caused by an imbalance of Ohms between channels or a short. remove & check all speakers and cables for continuity or shorts, does the unit power on without speakers or in a different mode (surround off).
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Has power but keeps switching to standby


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replace all the electrolytic capacitors in the power supply. i had the exact same problem with mine and once i replaced the capacitors it powered up and stayed on and worked perfect.
these capacitors tend to fail as they're of poor quality.
this fault is very common on denon receivers, especially the later models.

hope this helps?

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sounds like overload protection
turn the volume all the way down, then turn it on
if that doesn't do it you may have a short in one of the speaker lines - try disconnecting them one at a time

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