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Replacement display lamps

I require replacement display lamps for my Harman Kardon 630 Twin Power Tuner Amplifier (1973-1975. Can you tell me where I can source them

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Have you tried

Posted on Sep 27, 2009


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How do I reset my harman/kardon avr 630 receiver ?

See link for users manual. Instructions for Processor Reset are on page 50.

"Processor Reset
In the rare case where the unit's operation or the displays
seem abnormal, the cause may involve the erratic
operation of the system's memory or microprocessor.
To correct this problem, first unplug the unit from the
AC wall outlet and wait at least three minutes. After the
pause, reconnect the AC power cord and check the
unit's operation. If the system still malfunctions, a
system reset may clear the problem.
To clear the AVR 630's entire system memory including
tuner presets, output level settings, delay times and
speaker configuration data, first put the unit in Standby
by pressing the Standby/On Switch1. Next, press
and hold the Surround Mode Group Selector2
and the Tuning Mode Selector8buttons for three
The unit will turn on automatically and display the
RESET message in the Upper Display Line #.
NOTE: Resetting the processor will erase any configuration
settings you have made for speakers, output
levels, surround modes, digital input assignments as
well as the tuner presets. After a reset the unit will be
returned to the factory presets, and all settings for
these items must be reentered.
If the system is still operating incorrectly, there may
have been an electronic discharge or severe AC line
interference that has corrupted the memory or
If these steps do not solve the problem, consult an
authorized Harman Kardon service center.",d.eXY

Mar 17, 2015 | Harman Kardon AVR 630 Receiver

1 Answer

Only hissing sound from 990 Vxi tuner

I remember a similar problem with these back when I repaired them. It has something to do with the I.F. section of the AM/FM tuner section and will require a HK service visit. Find a local HK dealer who's been selling them "forever" and ask if they have a bench tech who they would recommend for the repair. I just saw one of these on Ebay for $25.00 so I wouldn't spend much to have it fixed.

Oct 16, 2012 | Harman Kardon Harman HK 990 Amplifier

1 Answer

Volume control rises in volume on its own. When I lower volume, it will rise again in just a few minutes to maximum level.

This is often caused by a defective tact switch on the front panel. With the system turned off, try puching all of the switches on the front( except power on). You should feel the switch engage. If not, then the switch is likely to be faulty and require replacement. Parts cost should be in the $5 range.


Aug 28, 2010 | Harman Kardon AVR 630 Receiver

1 Answer

No Memory Stotred in Harman Kardon AVR 65

You have a memory cap ,usally located on the front display,that is most likely defective.measure voltage on cap with unit off should measure at least 3-5 volts

Apr 10, 2010 | Harman Kardon AVR 35 Receiver

1 Answer

Hi, i am having problems with the multiroom on my AVR 630

Go into your OSD (on screed display).

Go to multiroom.

Change the SB AMPS from MAIN to MULTI.

Make sure you have only analogue sources, it will not amplify digital inputs for the MR.

Oct 09, 2009 | Harman Kardon AVR 630 Receiver

2 Answers

I have Harman kardon AVR 630 and I have trying upgrade for better performance but during the upgrade the problem occured. I have contacted the harman service it seems a lot of money required.

If it failed during the upgrade after it flashed the memory and before it reinstalled the new firmware it has to go in for service. And it will be over 100 USD. est.

Sep 26, 2009 | Harman Kardon AVR 630 Receiver

2 Answers

I have a Harman Kardon 700 Series amp/pre-amp/tuner system that I want to get repaired ( an HK 770 Twin Torroidal Ultra Wideband DC Amplifier, a matching HK 725 Pre-Amplifier, and a matching HK 710 Tuner)...

This will take a little homework on your part, but parts for this might be available. I don't kow your model well enough to know whether or not the power switch is generically available. Any possibility you can post a picture? Manufacturers are only required to maintain spare parts for 5-7 years after they stop selling that model. If the part is generic enough, other distributors will carry replacements. If all you need is the power switch, you stand a good chance that a replacemetn is available.
Keep me posted,

Apr 08, 2008 | Audio Players & Recorders

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