Question about Sony STR-GA7ES

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Right Channel Issue

Hi,

My right speaker channel (Front Speaker) is going bad - the audio is there but it's breaking up and has a static-type sound. I swapped speakers, speaker wires, changed selection from Speaker A to Speaker B, and I get the same result from either TV, radio, or CD player.

Thanks for your help!

John

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  • hullcove Jun 11, 2008

    Sony STR-GA7ES

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5 Suggested Answers

techman
  • 3130 Answers

SOURCE: Left channel out

probably I would say no. Unless you know how to read a schematic or know how to do certain small static checks on the output devices and the drivers as well as the power suppy feeding these devices.

Posted on Apr 05, 2006

SOURCE: Onkyo TX-SV414PRO - Right channel has no audio, left channel works fine.

get a new receiver

Posted on Feb 10, 2008

  • 319 Answers

SOURCE: both left and right speakers play audio for right speaker

I think you mean the left channel is out but when you use test tone, the sound comes from left and right channels through the right channel speaker. If this is case, the switching IC is malfuncting. Unit needs service

Posted on May 01, 2008

  • 6771 Answers

SOURCE: str-gx800es sony receiver problem- right

If you have checked the speakers and wiring, the right channel has a audio driver or output problem, which explains the low volume, static, and distortion. A service technician will be required to fix the receiver so it will balance the left side.

Posted on Jan 10, 2011

palaboy
  • 5807 Answers

SOURCE: Sony STR-DE197 AM-FM Receiver. Has

Inside the Receiver there are electronic components mounted on the aluminum

heatsink ( Audio Output Power Transistors )



it may looks like these :



MN2488 ( Q753 )


palaboy_78.jpg



and usually paired with MP1620 ( Q754 )


palaboy_79.jpg



You may have to check on those two pairs of power transistors

and replace in pairs.


( which means if any of the two is bad , have them both replaced )




Check also the audio signal on the right channel input , if it

is on the same level of those of the left channel.



These components are available at:

http://www.mcmelectronics.com/product/DISTRIBUTED-BY-MCM-/MN2488

Posted on Feb 22, 2011

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