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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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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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My Denon AVR-75 seems to stay in standby (red standby light is on) and I don'd get surround sound through it. How do I get it out of standby?


if the receiver does not power on from standby there is a problem like bad power supply or even bad macroprocessor. You need to bring it to a service center for diagnosing. 10-years old receiver, maybe better to buy new one.

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Has power but keeps switching to standby


Disconnect all speakers at the receiver and turn it back on, if it stays on post a comment and I will help you troubleshoot further. If it still cuts out, it needs to go to service for repair. Hope this helps.

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Did you try to reset the unit? Resetting the unit has fixed every problem I have ever had......turn off unit.....hold down A+B at the same time then turn the unit back on...hold buttons for roughly 3 seconds....Let me know if it works.

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What is the master reset code for the denon avr 1508?


Turn the unit off by main switch (not a standby button).
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Jul 20, 2009 | Denon AVR-1508 Receiver

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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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