Question about Harman Kardon Harman HK 990 Amplifier

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I have a Harman Kardon HK990 which throws an error #005 if I switch it on with a digital input connected. If digital input is not connected, it turns on without any error and all buttons work as expec

I have a Harman Kardon HK990 which throws an error #005 if I switch it on with a digital input connected. If digital input is not connected, it turns on without any error and all buttons work as expected - like switching inputs, speaker settings etc. But there is no sound for any inputs including processor bypass in direct mode. I have read about an IC SRC 4392 as a potential problem. If that is indeed the case, what is the solution? Just buying a new SRC 4392 and replacing the existing one will solve the problem? Can someone help me with instructions?

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  • Harman Kardon Master
  • 924 Answers

If you had a bad amplifier, as suggested, the unit would most likely have a condition known as DC Offset. In this case, the amp would immediately shut off. As you said, the amp stays on, but you have no sound. First thing I suggest, turn the unit off. Listen carefully to the top of the amp. When you first push the power button, you should immediately hear one click, followed by a second click, within 5-20 seconds. If you hear that second click, you amp is likely not bad. If you don't, then you do most likely have a blown amp, with engages the DC Protection circuit to the microprocessor(computer within your unit).

Next step is to open your owner's manual. In there, you will find a procedure called, "Return to factory reset, or default". Follow that procedure, to reset the unit back to the factory settings. Those inputs are assignable, meaning that you can make certain inputs, analog or digital. You may have set one wrong by mistake. The reset will fix that. If you need more assistance, or would like to inquire about a repair, please visit my website at, Audioserviceclinic.com. By the way, I worked for HK, JBL and Infinity. Thank you.

Posted on Nov 29, 2014

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Posted on Jan 02, 2017

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futurework
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SOURCE: My amp suddenly stopped working last night. As

You have a bad amplifier section and your unit will need to be repaired by a technician. I would disconnect the speakers to prevent possible damage. In some cases components in line with the transistors will be bad in the amplifier also. There is no way to tell without electrically testing the unit in shop. Estimated repair cost would be in the 60 to 80 dollar range depending on the number of parts that are bad and the labor rate in your area.

Posted on May 04, 2010

  • 6 Answers

SOURCE: Ok, yesterday I was hooking up my Samsung 40in LCD

check to make sure you dont have a bad hdmi cable thats what it sounds like is stereo balance set to the middle on the receiver.

Posted on Aug 20, 2010

Testimonial: "Thank you, you were right on the money with your answer and help!"

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SOURCE: I own my harman kardon 620 amplifier for about 8

The problem is in the audio circuitry, there are bad solder joints on the board that need to be addressed, from your description it is a intermittent issue with the sound. Since this a high end unit I recommend a top audio technician to work on your amplifier, and I suggest not using the system until it is repaired because the risk to the audio output parts getting damaged is high and they are pricey.

Posted on Jan 07, 2011

dunnbiker
  • 8546 Answers

SOURCE: How are you? For HK990,How to do bi-wiring

Sabve your money - it's BUY-wiring.

http://www.harmankardon.com/EN-US/Products/Pages/ProductDetails.aspx?PID=HK+990

http://www.harmankardon.com/resources/Brands/harmankardon/Products/ProductRelatedDocuments/en-US/OwnersManual/HK%20990_OM.pdf

Bi-wiring does nothing but make you use twice as much speaker wire for the same electrical effect. Bi-amping assumes there are deficiencies in your electronics that must be worked around, again by using more speaker wire and separate amps.

Do some reading on the web about "bi-wiring".

Posted on Jul 16, 2011

  • 1 Answer

SOURCE: My Harman Kardon AVR 120 1 front right speaker does not have sound

did u chk ur wires? maybe it came lose to tht speaker

Posted on Feb 20, 2012

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2 Answers

I have a Harman Kardon HK990 which throws an error #005 if I switch it on with a digital input connected. If digital input is not connected, it turns on without any error and all buttons work as expected -...


1.Is the fault caused by an optical or coaxial input or both?

2. Have you tried a Firmware Reset? (press "Level Settings" button & "Speaker 1" together.

3.Do you have a Service Manual (I have pdf!)

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It is unlikely that your have a damaged amplifier. You may have something switched wrong. In your owner's manual, you will find a procedure that says' "Return to factory defaults, or just reset". If that doesn't resolve your issue, or you need more assistance, or would like to inquire about a repair, please visit my website at audioserviceclinic.com. You may contact me there. BTW, I worked at HK. Thank you.

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Hi i dont know if you found your solution but you can solve this on your own.
on the front there is two buttons you have to press and hold in standby mode. The "Level settings"button and the "speaker 1" button. when you do that you reset the firmware.

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You may need one, if it doesnt have,


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Phonopreamps.com Home Page

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How are you? For HK990,How to do bi-wiring connection of the speakers? thanks


Sabve your money - it's BUY-wiring.

http://www.harmankardon.com/EN-US/Products/Pages/ProductDetails.aspx?PID=HK+990

http://www.harmankardon.com/resources/Brands/harmankardon/Products/ProductRelatedDocuments/en-US/OwnersManual/HK%20990_OM.pdf

Bi-wiring does nothing but make you use twice as much speaker wire for the same electrical effect. Bi-amping assumes there are deficiencies in your electronics that must be worked around, again by using more speaker wire and separate amps.

Do some reading on the web about "bi-wiring".

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1 Answer

It runs so hot why?


Possibly lack of ventilation or excessive volume through difficult speaker loads.

http://media.onecall.com/Image_Products/Harman%20Kardon/harman-kardon-hk990.pdf

See page 6.

IMPORTANT: When connecting two pairs of speakers, determine the impedance of each pair

by looking on the back of the speakers, in your owner's manual, or by contacting your dealer or manufacturer.

You can listen to two pairs of speakers at the same time ONLY if the impedance of EACH speaker is NOT LESS THAN 8 Ohms.

WARNING: Do not play sets of speakers simultaneously except as recommended above.
Amplifier may overheat.

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1 Answer

Fiber Optic input


No gots. The 3485 is pre-digital stereo-only.

From the manual, page 19

"You may have observed that the HK 3485 is not equipped with digital audio inputs or surround sound decoding. If you prefer the complete home theater experience, you may wish to consider purchasing a fullfeatured Harman Kardon AVR Series audio/video receiver. However, we hope you will find that using a DVD player with the HK 3485 in smaller settings, such as a bedroom or den, surpasses the audio performance of most televisions, including those with onboard stereo speakers."

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