Question about Harman Kardon HK 3480 Receiver

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No speaker sound with hk 3480.

The receiver has power but no sound from speakers

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Your fuses are blown by possible crossing speaker wire - and + together. I did this and kept turning it on but I ended up frying the unit. Check your wires and make sure that they are seperated properly. If problem continues then unscrew the shell and replace 1 or all 3 fuses (depending on what was blown) with GMA 8 amp fuses. good luck.

Posted on Jan 03, 2009

  • David Kopp
    David Kopp Nov 25, 2016

    Same problem here. All fuses are intact.

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1 Answer

Not getting any sound out of speakers help please :(


You need to set the device on the aux mode. Connect the cable at aux. Sign at the back of the device

good luck

May 07, 2015 | Harmon Kardon Harman Kardon Harman/kardon...

1 Answer

How to troubleshooting


prob with the audio amph on the motherboard

Dec 04, 2013 | Harmon Kardon Harman Kardon Harman/kardon...

1 Answer

When hooked up get sound but only with volume turned way up and it is very quiet like its working but no power


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.

Dec 25, 2010 | Harman Kardon HK 3480 Receiver

1 Answer

Fuses blow when receiver turned on, even when the speakers are not connected.


These means that the output stage is already blown out (maybe from pre-used short circuit speakers' cables). I suggest you to get it at a technician in order to locate and replace the blown parts.

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Sep 13, 2010 | Harman Kardon HK 3480 Receiver

1 Answer

Reciver goes into protect mode as soon as I turn it on.


Remove speaker wires and try again. If it still goes into protect mode, the problem is internal...shorted power transistors or some other fault. Check fuses also.

Apr 01, 2010 | Harman Kardon HK 3480 Receiver

2 Answers

Why does my harmon kardon reciever keep protecting when i turn it on? i checked the fuses.... nothing wrong...?!?


Check the speaker wires.
Make sure your ohm loads are stable especially if you are using more than one pair of speakers to any output.
Check the starting volume.

Nov 23, 2009 | Harman Kardon HK 3480 Receiver

2 Answers

HK 3480 sound suddenly cuts out


your fuses are blown by possible crossing speaker wire - and + together. I did this and kept turning it on but I ended up frying the unit. Check your wires and make sure that they are seperated properly. If problem continues then unscrew the shell and replace 1 or all 3 fuses (depending on what was blown) with GMA 8 amp fuses. good luck.

May 23, 2008 | Harman Kardon HK 3480 Receiver

1 Answer

Hk3480 buzzing


Is the buzzing coming over the speakers or just from the receiver itself?
If over the speakers:
Try swapping ports on the receiver from the DVD. Go from DVD into an auxiliary video or VCR 2 if available.
Try swapping out the cables with known good ones.
But do this in steps to be able to nail down the problem and not just leave a mystery.
If the sound is solely coming from the receiver it could be a dusty fan. Blow it out with compressed air ,With the Power Off.
Or, my favorite, might just have to crank it up so you can't hear the buzzing.
good luck
COEch

Mar 11, 2008 | Harman Kardon HK 3480 Receiver

1 Answer

Protect mode


have you ever been able to hear anything from this unit?

Jun 04, 2007 | Harman Kardon HK 3480 Receiver

1 Answer

Amplifier/receiver switches off systematically after a few second of use


Sounds like a bad output channel is causing it to go into protect mode. Time to see a repair tech.

May 01, 2007 | Harman Kardon HK 3480 Receiver

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