Denon AVR-588 Sound Delay

Start with the manual and carry on from there. Television to AVR, but powered speakers don't sound like a good idea. Your AVR is the amp.

Harman Kardon AVR 25 II Owner's Manual - ManualsLib

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View and Download Harman Kardon AVR 25 II owner's manual online. Harman Kardon AVR 25 II: Owners Manual. AVR 25 II receiver pdf manual download.

Sounds like the left channel has blown in your AVR 25II. If it was a faulty headphone jack it simply wouldn't send an output signal to the speakers.

Harman Kardon Support AVR 1700 AVR 1700


Also, what kind of speakers are you using?

Thanks

Hi if there is an optical out on the television i would use that direct to your Harmon Kardon AVR 125, the sound would be in sync with picture, as the source is the same.

You don't say if all speakers are silent or just the ones to the unspecified NAD power amp. Do ANY speakers work regardless of which device powers them? Could the NAD be the problem?

How is TV audio (from the cable box) getting into the Receiver? If digitally, you wouldn't be missing any one channel on a connection malfunction, you'd lose them all. If analog, swap the channels around to isolate the problem (and reconsider using digital).

I also had this UNLOCK message on my Harman Cardon AVR 130.
The reason for this error was - in a hurry I've plugged the optical input into optical OUT! Double check that your connections in the back are correct and hopefully it fixes your problem.

Cheers,
Sergey

This model does have a delay function. Programming is on page 19 of the user manual. Go to http://www.harmankardon.com/product_support/interstitial.aspx?sJump=ps&Region=USA&Country=US&Language=ENG select all products, AVR135, and get the owner's guide. If you have trouble with the link, then go to the Harmon Kardon site, and make your way to the support portal and then select all products.

Harman kardon amplifire are known for that.specially AVR 7000
but sometimes this comes from poor wiring and using a wire that will not conduct better sound. Remember your wiring is very important.you may think your wiring is currect, better to double check. even if your connection is ok and the wire you are using are not better to produce quality sound you will not get sound from every speaker.

good luck

Check the fuses - there may be one inside the box as well. May also be a bad transformer. You can get a multi-meter at Home Depot and lookup how to check the power at the transformer.