Question about Harman Kardon PA 4000 8-Channel Amplifier

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Harman Kardon PA5800 amplifier short problem

I have a Harman Kardon PA5800 amplifier. While the system was on I was taking speakers wires off one speaker lead and puttin gthem on anotehr when my system went dead. When I powered the amp back on it now displays a short circuit indication. I will not green. I opened the unit and checked all the fuses, which are good.
Doyou have any suggestions? I'm hoping to get this fixewd by the Superbowl.

Thanks Norm

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5 Suggested Answers

  • 14 Answers

SOURCE: one speaker not working.

Suggest you swap the right speaker into the left output if it works the the amplifer in the control unit is faulty. IF still on sound then the rigth speaker is faulty.

Posted on May 08, 2007

  • 61 Answers

SOURCE: Amp problems

From the above symptom, it show that the output stage of the amplifier have some problem.The protection cct come in to cut off the amp. when the output shorted or have Dc voltage.( this is to prevent further damage to the amp. & speaker ).If you know how to repair , just check on the pwr transistor (with heat sink )or else send it to the repair center.hope it help.

Posted on Aug 21, 2007

  • 44 Answers

SOURCE: Harman Kardon avr 1500 service manual

try here - http://www.harmankardon.com/product_support/support_detail.aspx?prod=AVR500

Posted on Dec 16, 2007

Open SKy
  • 605 Answers

SOURCE: harman kardon

Orastie
Wow, general problem here, but the most near your problem could be, power failure, or the Power adapter is bad, or a energy failure at home, time to buy a new adapter.
Carl

Posted on Dec 30, 2007

SOURCE: Harman Kardon DPR 1005 problems

Sounds like the power supply or associated module. Definitely fixable, but probably needs a technician.

Posted on May 13, 2009

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Speakers harman kardon buzz


you have interference from something too close to your receiver. or too close to a speaker. don't stack all your devices together.

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My harman kardon avr 55 keeps shutting off on its own


HI,
Fist of all you have to disconnect all the speakers From AVR. Then switch ON the AVR . If its working normally then any of the speaker or any of the wire to the speaker is faulty. If so connect the speaker back one by one and check on which speaker connection does the AVR shuts off. That speaker or the wire to the speaker is faulty. Also try the same with the HDMI cables if they are use. Improper connction of HDMI cables can lead to these type of problem

If the AVR is not functioning properly even after removing the speakers(shuts off) thne there is internal fault with the amplifiers stage. Normally Dry soldering on the amplifier circuit board can cause this problem. Its need proffessional support.

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I have a Harman Kardon AVI 200 ii, when i turn it on it turns on like 3secs and then it automatically it turns off, why is that?


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Mar 24, 2012 | Harman Kardon Audio Players & Recorders

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My harman kardon avr 100 keeps cutting out every 3 secs. i can hear the music but constently keeps cutting off. its very annoying... any ways to fix this probem?


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Jul 24, 2011 | Harman Kardon AVR 100

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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.

Jul 09, 2011 | Harman Kardon Harman HK 990 Amplifier

1 Answer

I have **protect** in my kardon harman avr85?please give me solution


It could be a short in your speaker wire or the crossover in your speakers.

1) Turn off your unit and disconnect your speaker wires at the amp, if the protect is no longer displayed when the unit is turned back on, check the connections on the speakers. If you do not visually see a short on the speaker wire connection, turn off the unit and disconnect the wires at the speaker and isolate them so they do not touch then connect the speaker wires at the amp. Turn on the amp and see if the protect is on. If it is on, the wire has a short somewhere in the line. If the protect is off then suspect the speaker has a short in the voice coil or crossover.

2) If the protect is still on after you disconnect the speaker wires at the amp, it could be the power IC in the amp is shorted and needs to be replaced.

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1 Answer

I own my harman kardon 620 amplifier for about 8 years. Now the sound from the speakers comes on and off intermittently. I have connected and disconnected all the cables to the speakers but it still has...


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.

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The hum (50 or 60 Hz) is caused by the AC power getting into the entry point of the amplifier. Either the filtering capacitors from the powersource of the speakers have dried up - replace them - or there is a short in the cables.
There is another possibility: if you have kicked the subwoofer  box its transformer might have slipped from its fixings and now is touching the subwoofer speaker frame.
The only way to find which is to open the cases.

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