[Bob in St. Louis]

Hello folks.

My Harman Kardon AVR - 525 has no audio output.

Here's the story, my 2 year old daughter got ahold of the remote (while everything was powered up) and now my receiver has no audio. All of the front panel lights and displays work, all of the remote funtions work (as far as the display is concerned) but no sound. The unit will switch surround modes (op the display), Nothing from the speakers on any input; Am, Fm, DVD, DirecTv. Nothing. Not even the little thud I get from the subwoofer when the receiver is powered up after the sub amp.
Nothing.

I tried to turn it off for awhile.
Nothing.

I unplugged it for twice the lenth of time the manual says to.
Nothing.

The next step (as far as the manual is concerned) is to perform a factory reset.
Now this erases EVERYTHING, ie... all programed inputs, outputs, radio stations, channel delay settings, channel output level, ect..ect...
I paced around for quite awhile before I actually did it.. 

NOTHING   

Despite the fact I used the cute little smileys, I'm fairly upset right now. ... And NO, upset was not the first word I thought about using.

The unit is not under warranty anymore.
On the 'off-chance' that every audio input feed into the receiver happened to fall out at the same time, I checked that. Ditto for the eight output speaker wires. Obviously that doesn't/didn't happen.
No electrical storms in the area. No power failures. (surges unknown, but every other electronic device in the house functions)

I listened to it less than hour before I left, and it worked fine. A few hours later (son was playing xbox) daughter grabbed remote and pushed some buttons. No audio, my son INSTANTLY yelled at mom, HEY, where'd the sound go to??

I don't see how pushing a button could do this, but that's one helluva coincedence [sp].


Bob

[Digi-G]

You might check to see if the 'tape' or 'tape monitor' button has been pushed.  You didn't mention a 'mute' button, so that may be the culprit too.  Our cat walked on my remote once with similar results - it sure wasn't obvious what he had hit (it was one of the tape buttons).

[Bob in St. Louis]

Thanks for the response Digi-G, the mute function will blink the word 'mute' on the display, and it didn't show that it was muted. That didn't stop me from pressing mute about 6 times though. Kinda like when a light bulb in the house burns out, you think by flipping the switch 10 times that the bulb will magically work again.
Same with the tape, the display has always shown the current input and output.
Example; "DVD - OPT 1" or "VID 3 - OPT 2" showing the current input/output.

Bob 

[ted_b]

Yeah, it could be a stuck remote button...of course, batteries should have worn  out by now (or take them out).  I'd check tape monitor, sleep mode, another zone.  I'd take the remote out of the equation and use the front panel.  Good luck.

[Bob in St. Louis]

Hi Ted, thanks for the idea. Any button that is pressed on the remote will glow red while it's being pressed. If one is held down, it will glow, if another is pressed it won't glow (the first one stays illuminated).
I don't think that's the problem, but I am going to take the batteries out tonight when I get home.

Tape/sleep/zones all checked. And checked. and checked again. I've triple checked the config type of stuff.

Thanks for the good idea Ted.

Bob

[Bob in St. Louis]

Been in the shop almost 3 months, they've guessed at what part has failed over and over again.
It'll be new by the time I get it back.

Bob