Question about KLH Audio Players & Recorders

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KLH RECIEVER r 3000 RIGHT CHANNEL DOSN'T PLAY. WHICH TRANSISTORS SHOULD I CHECK. COULD IT BE THE 4231 AMPLIFIER AND HOW CAN I CHECK IT

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  • KLH Master
  • 5,683 Answers

You could check it by having the unit switched on a touching each of the pins of the device with an insulated tool. Making certain you don't short any of the pins together. You should hear a buzz on each channel. If you get nothing on the right then it could well have gone.
However that is a lot of messing about, as the device can be purchased for around £12, it could be easier just to replace it and see if that cures it. After all it is the device that does most of the work, so the chances are it's gone!

Posted on Oct 01, 2018

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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SOURCE: Output volume has dropped in right channel

dear sir,pls check the HT voltage fuse, LTsupplay also and out put stage,and volume controle,

Posted on Feb 01, 2007

  • 4234 Answers

SOURCE: Blown Channel on an amplifier

Look for low valued resistors that may look ok, but be open. Check the emitter resistors (.22 or .47 ohms). Check the transistors in the driver circuit as well.
Dan

Posted on Jun 06, 2008

marsrover
  • 682 Answers

SOURCE: The right channel on my NAD intergrated amplifier C320Bee no longer works.

if you did test for your cable and speaker and you find it fine-your problem will be in output stage of your amp and needs aid of service center.

Posted on Jul 15, 2008

petraman7
  • 1175 Answers

SOURCE: Proton 520 Integrated Amplifier with quiet left channel

Hi...
Flush all the switches and controls with De-Oxit D5 or better.
Then get back to me.
Thanks

Posted on Mar 01, 2009

  • 50 Answers

SOURCE: 3000 C200 PC Notebook: iam using lenovo 4231 mini laptop. am forget my HD...

Try to use the One Key Recovery if still fails contact LENOVO Warranty Support Department, check if the machine is still on warranty for depot so that you can send it for repair via Fedex free of cost.

Thanks for using Fixya.

Posted on Jul 28, 2010

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1 Answer

On my klh subwoofer the high speaker output stop working the sub works just fine but when I hook up the other speakers to it they don't play at all. I know if I go and buy a receiver I can bypass it.


The speakers connections have to come from an amplifier with sound coming from it in the first place. Once connected to the unit the bass signal is then extracted from the signal and the rest of the signal sent to the main speakers. The KLH will not power the main speakers on it's own. The unit will only take the two main stereo channels, from an amplifier, the left and right then go to one set of inputs and they then come out of the other two outputs.

Dec 27, 2016 | KLH Audio Players & Recorders

1 Answer

Amp light not working and one dead right channel


Without knowing how it's actually laid out, I'd surmise the output amplifier transistors in the right channel are shorted, the fuse for that channel may be blown, and the speaker protection circuit is keeping it turned off. Most amplifier speaker protectors disable both channels if there is a problem, but yours could be different. I surmise the lights you mention are directly connected to the speaker protector chips and indicate readiness for normal operation. If it takes a few seconds for them to come on after power-up, that lends credence to my hypothesis.
Unplug the amplifier, open it up, and measure the resistance from the right channel output to each of the output power supplies (or to the fuse for the output power supply for that channel, if present). If one or both is very low (i. e, close to zero), you have a fried transistor. If that is the case, it is probably a good idea to replace the complementary transistor connecting the speaker to the other power supply even if it tests good; it may have been overloaded when the first one shorted. In many amplifiers, the transistors are inside a hybrid amplifier module, so you would have to replace the entire module. In some amps, you have multiple transistors in parallel; here you can probably keep the transistors that were in parallel with the failed unit, but I'd still recommend changing the complementary transistors.

Apr 23, 2014 | Volfenhag ZX-5168 2-Channel 4000W...

1 Answer

What would be the probable cause of my konzert amplifier av-502 after replacing 2 power transistors npn & pnp in the left channel, the sound is distorted. i'ved checked the voltage across the spea


Check the bias resistors. They can burn out when power amp transistors fail. They will be very near to those two replacements. You can compare any parts using the right channel as a good. Readings and voltage measurements should be the same for both channels. Also the look of the parts. If a resistor is off-colour in the left, but not in the right you know something is up.

Jul 02, 2013 | Audio Players & Recorders

1 Answer

One side dead


hi zm_16dec,

Right chanel fully dead , output transistor burnedout ,

Without knowing the make and model of your amplifier

all i can advise is to replace the unknown part number of

the transistor.


Look for the working left channel output transistors and

replace the bad transistors in "pair". These may include

other components but check on it as well.


Check the speaker system, especially where that channel

is connected.Inspect speaker wires or cable up to the speaker

itself.


Amplifier wont blow without reason.It could be from the wirings,

speaker or volume settings of the unit.

Thanks for choosing Fixya for assistance!

Dec 24, 2012 | Audio Players & Recorders

1 Answer

One (right) preamp blow! I've located the problem to the right C160 module. When disconnected everything seems fine. Diodes and transistors are apparantly ok measured onboard as are all resistors and...


hi...
transistors are not ok on the C160 module.
replace all the power transistors and emitter resistors for that channel.
www.bdent.com and www.ceitron.com are good for transistors

Sep 30, 2010 | NAD C370 2-Channel Amplifier

1 Answer

One channel plays quiet


Hi,
the amplifier appliances has an audio fault that is the one side of the output (the audio transistor mosfet ) could be bad , also check for a 100v 2600uf electrolytic capacitor if bad, replace for a new one.
Also check for dry joint on the pcb of the appliance.
This will require a skilled personnel to work on this...

May 17, 2010 | Audio Players & Recorders

1 Answer

Add su bwoofer to KLH 200


the subwoofer i have, a polk, connects directly to the right and left speaker lines of the klh2400.
i then connect my stereo left and stereo right speakers to the subwoofer.
essentially, the subwoofer becomes a middle station between my speakers.
make sense?

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Legacy 1800 watt amplifier


HI ...NO, YOU CANT JUST CHANGE THE TRANSISTORS..YOU ARE RIGHT THERE IS MORE TO IT THAN THAT.......

Feb 06, 2009 | Legacy 2 Channel 1600 Watt Bridgeable...

1 Answer

Amplifier main channel non operational.


first pull out the power transistor then biased the output terminal. base,emitter have dc volts .4 to .5 collector to emitter have full voltage. if this voltage are in ur pre amp buy new trasistor

Sep 09, 2008 | Audio Players & Recorders

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