Question about KLH R3100 Receiver

Open Question

Hitachi SR2000 Receiver - Hum at 0 vol ,low out, cutting off soon

Hi,
I just bought a very old unit.
(A)
started very noisy, humm....even when volume is at "0",
and low-output on R, and no output on L (found fuse blown).
Replaced a hairline wire to try out before getting a proper tube fuse;
(B)
(1) hum...continued even when volume is at "0",
(2) very low output even volume is at max,
(3) suddenly output resumed to somewhat normal,
(4) suddenly either L or R be cut off,

I thought it was one or both of the 6300uf cap at fault. I only have 1200uf on hand, replaced, but no cure,
but the cut-off channel would come back,
and the other channel became dumb.

what would be the cause? aged cap's or the STK463?

Posted by on

  • firstsecond Jun 29, 2009

    Re: Hitachi SR2000



    Hi,



    Thanks for info. I removed the pcb from its chassis, took measurements:



    #7 & #10 to ground, being L/R outputs, readings were between -32.8 and 18.3v.



    #9 & #5 to ground, being VCC's, were + 34 and -34.



    I did not try to break the inputs as removing the who module is lot easier.



    Would you think it is the STK463 fault?



    This being a cheap receiver. I bought it for $5, so I would spend just a few dollars to fix it. Where can I get cheap STK463?



    I found a few posts on SR2000 having no output on one side.Is this Sanyo IC always has trouble?

×

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

The volume gets noisy, cracking sounds and fades out


Your volume control is dirty. Apply some deoxit or wd40 directly onto the module.

Mar 22, 2014 | Panasonic Technics SA-G76 AV Control...

1 Answer

DNX7120 issue with VOL increase button. When this button is pressed once, the volume skyrockets to max, VOL decrease button does not work right away to lower the volume, nor does the ATT button. Unit...


I had the same issue. You can use the on screen volume buttons on screen to stop issue and don't use the physical buttons anymore. Watch out about a month after the volume problem started all physical buttons on my DXN7120 stopped working. There are a few reports of this online, I have not found a fix yet.

Dec 15, 2010 | Kenwood DNX7120 Car GPS Receiver

1 Answer

Volume really low, even when turned right up


So the speakers and the individual amp channels work so that lets out the obvious big hardware items.

This is starting to sound like an obscure setting was set or changed by mistake.

It would be nice to figure out what that is/was in case it happens again but you may eventually have to resort to resetting the receiver to factory defaults and start over by holding the1/0 button for 5 seconds.

Mar 04, 2010 | Sony STR-DE875 Receiver

1 Answer

TX-SR705 60 hz. Hum


If you have a Home Theater Line conditioner on this receiver, not a power surge protector, even a "Monster" surge suppressor, your problem Is AC related. For troubleshooting; first if your AC power cord is three pronged, go to Lowes, Home Depot, etc. and get a three prong to two prong adapter. Your problem is a "Ground" issue, however it may not be from the receiver, it could be "Anything else" in your home. Even an actual outlet with a loose wire. It can be very very time consuming to "hunt down". An adapter will take the rest of the house out of the picture. Disconnect all other input sources like Cable, DVD, etc. then turn the unit back on. If you still have a humm, yes the problem is internal and needs serviced. If it stops, re-connect one item at a time until the noise re-appears and you have your culpret. If you don't have a line conditioning noise eliminating Theater surge protection unit; Get one! best few hundred bucks you could ever spend. It will protect all your electronics and could save you thousands! Panamax, Furman, Monster, are your top 3. If you still have issues, post a comment and I can help you further. Hope this helps.

Aug 23, 2009 | Onkyo TX-SR705 Receiver

1 Answer

Samsung av-r610 av receiver. noisy cooling fan. can it be replaced with a quieter/more efficient one?


Hi i have same unit. If you keep the volume anywhere below 31 the fan is not intrusive (you can hear a quiet hum but not a bother) I also give it plent of ventilation ie 1 foot at back and a little less to the sides. The problem is the unit is so slim the fan has to work harder to dissipate the heat build up.

Oct 08, 2008 | Samsung Audio Players & Recorders

1 Answer

Hitachi EC12 Compressor- weird hum


The burst of air you hear as the compressor shuts off is the cylinder unloading so it will not have to restart against a high pressure load. If the unloader is electrical it would explain the hum that you hear. This could be a normal function.

Aug 24, 2008 | Hitachi EC12 Portable Electric 2hp Air...

2 Answers

Acoustimass Subwoofer has a low "hummm" sound when turned on.


Sounds like an inadequate ground wire in the signal cable. You may have to replace the cable between the reciever and bass module. It also, however, may be IN the bass or reciever module.

Aug 04, 2008 | Bose Acoustimass 15 System

2 Answers

KT-SR3000


Had this problem with mine. turned out to be bad solder joints. Take the unit apart and solder these joints and it should fix the display problem.e0ae4d7.jpg

Jul 31, 2008 | JVC KT-SR2000 SIRIUS Radio Receiver

1 Answer

Kenwood VR 505 low sound in center channel


if the cables are ok and the speaker are ok also beside good setting you will have a problem of the output stage in your receiver.

May 06, 2008 | Kenwood VR-505 Receiver

Not finding what you are looking for?
KLH R3100 Receiver Logo

Related Topics:

585 people viewed this question

Ask a Question

Usually answered in minutes!

Top KLH Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

5056 Answers

The Knight
The Knight

Level 3 Expert

74136 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

Are you a KLH Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...