Question about Audio Players & Recorders

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Hi hope you can answer my question. My HK AVR 135 receiver will randomly change modes on its own. It may work for a time and then switch. What do you suggest I do to repair this issue?

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  • Contributor
  • 3 Answers

Replace the mode change button in the front panel PCB

Posted on Aug 23, 2019

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Posted on Jan 02, 2017

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Cerfer39
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SOURCE: Demo Mode Problem

Hi,

Press and hold the Menu button for more than 3 seconds.

Posted on Nov 23, 2007

  • 3 Answers

SOURCE: Best speakers for HK AVR 135

klipsch, klipsch, klipsch

Posted on Feb 06, 2008

  • 2 Answers

SOURCE: HK AVR 120 (left speaker not working)

Hi, your analysis are right, your speakers has no problem, the problem is in your receiver.
there are several factors that affects it, try some troubleshooting: and answer this questions:

1. During this event, what is the source of your INPUT audio signal?
Have you tried to replaced your RCA cables that connected to the source of your receiver?

If YES, then problem really exist in the internal system of your receiver. may be you have overdrive your receiver unintentionally, which cause the Power Amplifier to malfunction,

On this event, I would suggest that you bring your receiver to it's Service Center for repair,
This problem needs technical troubleshooting of a qualified technician.


Posted on Jan 03, 2009

  • 4234 Answers

SOURCE: HK AVR-247 protect mode

This is an indication of an internal problem. Typically this is shorted output transistors. Expect a parts cost in the $25-$40 range for this repair.

Dan

Posted on Apr 06, 2010

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1 Answer

HK AVR 125 display strobing and no sound, even in headphone jack


Hi...

Find someone that does TV or audio repair and have them open it up. A cable assembly may have loosened during the MOVE.

Cheers

Jan 30, 2014 | Harman Kardon AVR 125 Receiver

1 Answer

Can I connect guitar to my Harmon Kardon receiver


Sorry. They are not compatible. The headphone jack is an output but you need an input for a guitar or bass. You will certainly damage the HK if you continue. There are no compatable inputs on the HK. The inputs are meant to be used with a 300mv output device, such as a CD or DVD.

Oct 02, 2013 | Harman Kardon Audio Players & Recorders

1 Answer

My HK AVR 135 wont turn on. The orange light comes on but when i try to turn it on it does nothing. It has done this before and i ust unplugged it and plugged it back in and it turned on for a brief period...


Try unpluging the unit for atleast 2 hrs. The capacitors bleed off energy very slow, thats why it needs to be unpluged for a couple hrs. If that doesnt work it usually means the powersupply is going out.

Mar 30, 2011 | Harman Kardon AVR 135 Receiver

1 Answer

HK AVR-247 protect mode


This is an indication of an internal problem. Typically this is shorted output transistors. Expect a parts cost in the $25-$40 range for this repair.

Dan

Apr 06, 2010 | Harman Kardon AVR 240 Receiver

1 Answer

HK AVR25 MKII goes on and off numerous times on cold power up


The relay on the PWR SUPPLY board clicks once when the PWR switch is turned on then 2 to 5 sec. later it clicks again and 'off' it goes.
The small transformer ( standby power) on the board appears to be leaking crud (looks like wood glue) all along one edge.
Can I bypass this relay to see if the power transformer is 'ok'?

Jan 16, 2009 | Harman Kardon AVR 25 MKII

1 Answer

HK AVR 120 (left speaker not working)


Hi, your analysis are right, your speakers has no problem, the problem is in your receiver.
there are several factors that affects it, try some troubleshooting: and answer this questions:

1. During this event, what is the source of your INPUT audio signal?
Have you tried to replaced your RCA cables that connected to the source of your receiver?

If YES, then problem really exist in the internal system of your receiver. may be you have overdrive your receiver unintentionally, which cause the Power Amplifier to malfunction,

On this event, I would suggest that you bring your receiver to it's Service Center for repair,
This problem needs technical troubleshooting of a qualified technician.


Dec 25, 2008 | Harman Kardon AVR 120 Receiver

2 Answers

HK avr125 5.1, no display, no functions.


Same problem. C901 on the vertically-mounted input board next to the power supply transformer was burned. Replaced with ceramic cap from RS with same specs. Still did not work. Talked to Jeb, great guy at HK tech support. He suggested that R901 would probably be blown and maybe 902 also. These are flame-proof resistors and do not show damage. Tested with multimeter and Jeb was spot on. Replaced 1w resistors with 5w (all RS had) at same resistance. Works great.

Jun 20, 2008 | Harman Kardon AVR 125 Receiver

2 Answers

No sound


I had the same problem, unplugged the receiver for 5 minutes, then when I plugged it back in, it worked.

Jan 05, 2008 | Harman Multimedia AVR 235 7.1 Channels...

2 Answers

Harmon kardon avr 125 shuts down


If you want to fix it:

It must be a contact problem arount the power switch, power cable, fuse or the condensator area.
Maybe you can se a black color on the board.
And checking the solderind points with a magnifyer can help too.

Thats all from that distence.

Nov 11, 2007 | Harman Kardon AVR 130 Receiver

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