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Distorted one channel of sakura 737 power amplifier

Distorted left channel

Posted by Anonymous on

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Posted on Jan 02, 2017

  • 54 Answers

SOURCE: hafler dh220 power amplifier left channel distorsion

Sounds like your Power FET's are gone. Take it to a shop that specializes in high end or vintage gear. ....good luck...Rob

Posted on Mar 03, 2008

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1 Answer

Teac A R300 right speaker has s badly distorted sound after 20 minutes. When I turn it off nad turn it on again, Same problem after 20 minutes. Left channel working perfect.


Have you changed the speakers to see if it is a driver, or amplifier, issue? If it follows the speaker, get it reconed. If it follows the channel, look into that channel.

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Right channel distorted denon UDRA M7


Hello there, I have the same amplifier and now it has the same problem on the right output. Have you found out how to fix it? Thanks!

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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.

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Left and right channel distorted denon pma510


Anything that distorts both channels has to be something where both channels go in and out of it. Is the main amp an IC Power Amp such as the one shown below. If it is replace it.


6534b472-010a-4a7f-83ac-6253b4677d62.jpg

Mar 25, 2013 | Audio Players & Recorders

1 Answer

One channel's red led is always on and no sound


Register and download the manual for free at retrevo.com

http://www.retrevo.com/support/QSC-GX3-Amps-manual/id/23107ag606/t/2/

See page 7.

"CLIP: red, to the left of each Gain control.

Normal indication: illuminates whenever the amplifier is driven beyond full power. The LED's brightness indicates the amount of distortion. Distortion that causes only brief flashing may not be audible.

During muting, the indicator fully illuminates. This occurs during normal "On-Off

Mar 17, 2011 | QSC GX3 Amplifier

1 Answer

Right channel is having distortion even if the voulme is turned off. I tried swapping the speakers and cables but still the distortion can be heard from the speaker. It is still coming even if the jumper...


you need to check for the filter capacitor on that channel, and going to the power amplifier. some distortion come from leak parts and need to trace that manually.

Apr 13, 2010 | NAD C325BEE Amplifier

1 Answer

The left channel is lower than right, i have checked all terminals etc..


Providing the effect is there on all inputs, plus there's no distortion, the problem could be caused by an Electrolytic bypass or coupling Capacitor in the pre-amp stage or higher.
If there's distortion, the problem is in the main power amp, with the 'things' on the heat sink.

Nov 01, 2009 | NAD C350 2-Channel Amplifier

1 Answer

Can you tell the wattage of the onkyo tx 905 not the home theatre model stero only


140 watts minimum continuous power per channel, 8 ohm
loads, 2 channels driven from 20 Hz to 20 kHz, with a
maximum total harmonic distortion of 0.05% (FTC)
170 watts minimum continuous power per channel, 8 ohm
loads, 2 channels driven at 1 kHz, with a maximum total
harmonic distortion of 0.7% (FTC)
180 watts minimum continuous power per channel, 6 ohm
loads, 2 channels driven at 1 kHz, with a maximum total
harmonic distortion of 0.1% (FTC)

Oct 22, 2009 | Onkyo M-282 2-Channel Amplifier

1 Answer

Sound from left channel is small and distorted.


The distortion might be caused by a resistor. The loss of volume could be the capacitors, but you could try injecting signals into the transistors to see if any has gone. They can cause the distortion and loss of signal. If you apply a soldering iron to any part it will heat up quicker, or you could also use a hairdryer for the whole thing. You can also get a freeze spray that cools things that have heat sensitive faults (available from electronic parts shops).

Apr 24, 2009 | Marantz PM-15S1 2-Channel Amplifier

1 Answer

NAD C370 Right channel distortion


Sounds like you have lost the power amp transistor(s) or IC for this channel.

Aug 29, 2008 | NAD C370 2-Channel Amplifier

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