Question about Harman Kardon AVR 25 MKII

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Harmon kardon avr 25 ii

Someone posted this and I am having the same problem. Someone recomended getting some type of plug to block output, but when i ask anyone at radioshack or best buy they have no idea what i'm talking about. Can you help me?

i recently got this harmon kardon avr 25 II from a friend who said it worked perfectly, when i hooked it up to brand new speakers i got no sound, no matter the input. no tuner, no phono...nothing. when i put in headphones and turn the volume to it's max i can barely hear a whisper but that's all the sound i've ever gotten from it

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I upgraded my HK AVR 20II and ran into the same problem when I tried to hook the old unit up out in my garage.

Luckily I remember that on the rear there is a pre-out RCA port (L/R) and a Main-In port that are intended to be to/from an equalizer/amplifier. These come jumpered out of the box, but I had been using an equalizer so the jumpers were long lost.

Assuming you also have no amp/eq you are using, just connect the Pre-Out to the Main-In using a standard M/M RCA cable and you will be in business. (turn the volume down first!)

Good luck.

Posted on Apr 25, 2009

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First check to see if you have two jumpers on the back of your unit located near the upper left. They should be plugged into the main in and pre out for both the right and left channels. Those input outputs are for using external amps or receivers and should be bridged when they are not being used. If you are missing these plugs I think you may be able to use some very short RCA cables or call a shop specializing in high end stereo components for replacements.

Secondly, there will be two buttons on the front of your receiver under "speaker" One will be 1 the other will be 2. Now look on the back of your receiver to determine which channel you are using. If your speaker wire is coming out of Front 1 outputs then press in the button 1 on the front. If your speaker wire is coming out of front 2 outputs then push in button 2 on the front. Only one button should be pressed in is you are only using one set up speakers. If you are running two sets of speakers from the same front channel then press in both buttons.

If this does not fix your problem then next take off the top cover plate and check all your fuses for continuity with a multimeter. Be sure your receiver is unplugged first. There should be 4 fuses near the rear on the left hand side if looking at it from the front. The one closest to the front is the main fuse and if it is blown you will not get any power at all. Not even the amber standby power light will come on.

If none of this helps I don't know what to tell you anymore. A certified repair shop will charge between $125-$175 to fix most problems. You can buy a used working Harmon Kardon receiver for probably around the same price on Craigslist.

Posted on May 06, 2009

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  • Harman Kardon Master
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Hello. My name is Dave. If you have no sound, first unplug the unit for a moment. Plug it back in. When you push the power button, you should hear one click. With about 5 seconds, you should hear another click. If you don't hear the second click, you have amplifier damage known as DC Offset.

Dave

Posted on Sep 30, 2012

You need to make sure that

1. THe pre-in and Out jumpers are in place.
2. The vcr seletions are off.
3. the right speaker buttons are in and out.

Happens on mine a lot... someone means to hit the power switch and hits the speaker select...

Posted on Jan 29, 2008

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Hello,
It is very passible that you have a cold solder joint on the circuit board somewhere, if so it could have broken loose durring shipping. Look for any device that has mass that could have broken loose due to inersia. typicaly a power coil with an iron core etc. Good luck...
Earl

Posted on Jan 06, 2008

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: harmon kardon avr 25 II

hey i also had this problem, i don't know the name of these but they are basically plugs that you have to block output from the front rear and center speakers of the white/red cables... sry for bad description but its on the left side when looking at the back of the receiver, while all of the other speaker wires should be hooked up to the right with the twisting knobs... it took me forever to find this out but yeah it was a simple fix

Posted on Oct 30, 2007

SOURCE: no sound?

yeah actually the prein jumpers were the problem...they had worn out....one of those "could have kicked myself" things....thanks for the help tho

Posted on Feb 21, 2008

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