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It has power but won't work!

It was working perfectly and all of a sudden a loud noise, and powered off. Now when I turn it on the mute sign flickers a couple of times and turns off. It is not the fuse because it has power, but I don't seem to get anywhere. Help! I have a Kenwood Receiver KRV5580. It was working alright but all of a sudden the display does not show up on powering up. The power is on but the 'Muting' indicator blinks for sometime and nothing seems to work. Please help ASAP!

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  • Anonymous May 06, 2009

    I bought my amp around 1993. The other day, the radio was on and everything was normal. All of a sudden, for a few seconds the radio reception sounded a little fuzzy, as if an airplane had interfered with the signal. After a couple of minutes I noticed that there was no music playing. I thought that maybe there had been an electrical surge, but everything else was on. So, the power is plugged in; the CD player that is plugged into the amp comes on, but no lights come on on the amp -- no stations, nothing.

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  • 4,234 Answers

There is a problem with the output stage of the amplifier section and the whole unit is in "protect" mode. This means that the output section is turned off. The output transistors are the likely defective parts here. Expect a repair cost of $15-$40 in parts plus the local labor rate.
Dan

Posted on Mar 27, 2008

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1 Answer

Audio receiver sudden death


I would suggest not turning it up so loud the next time and post the model and manufacturer information so we can better help.

There may be fuses that blew, replace them but do so with the same type of fuse, going to a different fuse will probably destroy your unit the next time you turn the volume up.

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I have a sharp aquos tv model lc32d6u, we have lost the audio, we have tryed turning the set on and off, nothing. we are serviced by Comcast and it is not the box. I can hear a small click when we turn the...


Try this
1. Power off both the TV and the DVR.
2. Plug in the HDMI cable to both units.
3. With the DVR off, press and hold the power button on the unit until the word BOOT appears on the display.
4. Wait until the unit reboots and shows the clock again, then power the TV and the DVR up.
5. Choose the appropriate input on the TV for HDMI.
6. Use the SETTINGS button on the DVR remote to get into the "more settings" option.
7. Find audio settings and choose HDMI output, press select.
Hope that helps.........

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I have to turn the avr 7200 way up to get somewhats of a loud responce, but when there is no music, i hear a hsising noise. I never used this reciever in 10 years. what could it be?


Unless permanent hearing damage and the destruction of your equipment is a goal, NEVER USE MAXIMUM VOLUME FOR TROUBLESHOOTING or any purpose.

Turn the volume control to something medium.

The errant switch, control or condition may change and you will suddenly release the amp's full power and possibly destroying your speakers. If a signal isn't audible at 1/2 volume it's probably not there.

Carefully examine the front panel for clues like a misplaced Source Selection, Mute, Tape Monitor control or Multichannel Analog Input selected.

There is a good chance that a common control may have developed a high-resistance or 'dead' spot through defect or idleness and is causing your symptom. Turn the POWER OFF and operate every control throughout its range a number of times, especially rarely-used ones like Tape Monitors and the Mute control.

Turn the volume to something reasonable and see if that helped.

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I have no sound out of the front speakers. Mute button is off, speakers work fine. Only have sound (very little) if volume is turned way up.


NEVER USE MAXIMUM VOLUME FOR TROUBLESHOOTING.

Turn the volume control to something medium.

The errant switch, control or condition may change and you will suddenly release the amp's
full power and possibly destroying your speakers. If a signal isn't audible at 1/2 volume
it's probably not there.

Carefully examine the front panel for clues like a misplaced Source Selection, Mute, Tape
Monitor control or Multichannel Analog Input selected.

There is a good chance that a common control may have developed a high-resistance or 'dead'
spot through defect or idleness and is causing your symptom. Turn the POWER OFF and operate
every control throughout its range a number of times, especially rarely-used ones like Tape
Monitors and the Mute control.

Turn the volume to something reasonable and see if that helped.

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Can't get my speakers to work with kenwood vr-307 and cd player. manual is of little help. any suggestions? i think i know how to hook up the speaker wires, but maybe i am missing a mute or other...


Start with the basic setup in the manual. Test tones - work or not?

NEVER USE MAXIMUM VOLUME FOR TROUBLESHOOTING.

Turn the volume control to something medium.

The errant switch, control or condition may change and you will suddenly release the amp's full power and possibly destroying your speakers. If a signal isn't audible at 1/2 volume it's probably not there.

Carefully examine the front panel for clues like a misplaced Mute or Tape Monitor control or Multichannel Analog Input selected.

There is a good chance that a common control may have developed a high-resistance or 'dead' spot through idleness and is causing your symptom. Turn the POWER OFF and operate every control throughout its range a number of times, especially rarely-used ones like Tape Monitors and the Mute control.

Turn the volume to something reasonable and see if that helped.

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What source is selected when this happens? Badly-tuned FM radio or undecoded DTS from an external source could make loud white noise?

Just the left? Suspect the source if it's external. Swap left and right inputs to see if it follows.
Multiple sources? The amp is causing it.

There is the slighest chance that a common control may have developed a high-resistance or 'dead' spot and is causing your symptom. Turn the POWER OFF and operate every control throughout its range a number of times, especially rarely-used ones like Tape Monitors and the Mute control.

Maked sure your speaker wires are physically isolated or at right angles to power cords, devices with motors, TV

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Is this a new installation or did this problem just appear spontaneously?

Perhaps MUTE is on. Don't troubleshoot this with the power turned up because you may suddenly find a wrong settign and blow up you speakers.

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Page 23...

There may be a short circuit in the speaker terminals.



Disconnect all speakers and try it. If it works troubleshoot each speaker one at a time. Shorted wires are indicated.
© Disconnect the AC cord, then correct the speaker connections.

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