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Discussion Starter #1
Hi!

I have Harman Kardon AVR-132, using it since 2 years, but recently i have noticed that there is no sound from rear left speaker, all i can hear is humming, i have changed the speaker but same, so it means there is problem with the amp, so can some one give me some idea, if its hardware failure then which ic, transistor etc to check.

any help or hint plz ?
 

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Discussion Starter #3
Yes i know, but never opened Harman Kardon before, so i was just hoping some clue so i can check specific area or part
 
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