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Blows fuses every time powers on - Denon Audio & Video Receivers

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Make sure that power and ground aren't accidentally reversed. Double check all connections at the vehicle harness with a test light or preferably a voltmeter. Also, make sure that you are not overloading the power lead. There should be only 10 - 15 amps on a radio circuit. No amps or other adapter/power supplies should be connected to the radio's power leads unless they have a low current draw. Hope this info helps.

Posted on Sep 03, 2008

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Right speaker does not work on both A and B


Before doing anything else swap the speaker connections over to make sure that the problem is in the amp and not the speaker / speaker cable.
If that doesn't solve it then it is most likely an internal fuse blown on the amplifier circuit board - they are little tiny glass ones, obtainable from most tv repair shops, but it is important to get the right power rating. Also some of these fuses are 'quick blow' (go instantly there is a fault) others are 'slow' or 'time' blow - take a second or two before they actually blow - make sure you get the right one (timed usually have the letter T next to the power rating)

Mar 22, 2011 | Technics SA-DX930 Receiver

1 Answer

I have a pro-sound 1000 which keeps blowing plug fuses Can you let me know what fuse should be in the plug as this maybe the problem


The fuse in the power plug is there to protect the cable. The fuse in the plug should be the same as the cable. For instance a 5amp cable should have a 5amp fuse. If the fuse blows all the time the cable could be faulty or there could be an overload in the power supply (perhaps the transformer has failed) that is causing the supply to draw more amps than the cable and fuse can cope with.
WARNING fitting a fuse higher than the cable rating could cause the cable to overheat and catch fire!

Mar 07, 2010 | Audio & Video Receivers

1 Answer

I have the same problem. The fuse blows every time I plug the Sony STR-DE135 into the wall. I did not find the F901 at Radio Shack, so I bought a fast acting 5 Amp 125V Fuse at the Hardware store. It blew...


There is usually one or two normal clicks on power-up. A self-protection relay activates after a short delay for circuit and power stabilization plus some internal cheking for shorts and thermal issues.

If it keeps blowing fuses you are stressing it a bit more every time you feed it another one. I'd get it in to a Pro for repair.

Mar 02, 2010 | Sony STR-DE135 Receiver

1 Answer

Every time it is turned on it blows a fuse


The fuse blows for protection because you have a blown audio amp or something in hte power supply

Nov 28, 2009 | Denon AVR-882 5.1 Channels Receiver

1 Answer

My fuse blew what kind is it to replace


Its probably a GMA fuse. Its value should be on the circuit board and on the old fuse. You can get replacements at Radio Shack or your local hardware store. Just make sure it is NOT a slow blow fuse. in most cases the fuse opens due to a problem with the receiver either in the power supply or more likely in the output circuit.

A slow-blow fuse takes a couple of seconds to open and in that time more damage will be done.

Feb 02, 2009 | Optimus STA-3500 Receiver

1 Answer

The fuse keeps blowing every time i put new one in it


If there is short circuit in power supply, fuse will blow itself to disconnect the circuit just to avoid fire or further damage in unit. Please check power supply of your unit.

Aug 19, 2008 | Audio & Video Receivers

1 Answer

Denon unit doesn't power on. No nothing! i believe the power supply went bad. Its a 2307CI is this a common problem?


Might want to check the fuses some time over a peried of time the tens to blow. check all fuses

Jun 06, 2008 | Denon Audio & Video Receivers

1 Answer

Blown Fuse


It's drawing too much power. Maybe a short in an amp. Do you have any warranty left? Double check to make sure you have the right fuse. You might also try a slow blow fuse so  you can turn it off right away as soon as the fuse starts to glow to help in diagnosing. 

Apr 23, 2008 | Harman Kardon HK 3370 Receiver

2 Answers

Receiver fuse continuosly blows when replaced and powered up


Ir's not likely to be a resistor. Sounds like a shorted component in the power supply. A diode or bridge rectifier, or possibly a transistor or Regulator IC.

Hope that helps...

Geno

Apr 03, 2008 | NAD C720BEE Receiver

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