Question about Sony STR-GX900ES Receiver
Check to see if the antenna is firmly connected and not making contact with the receiver chassis or other inputs/outputs.
Posted on May 09, 2009
Try disconnecting all of your speakers, and then turn on you unit. If you have a defective speaker, or a short in your wires, your unit will go into protect mode. If your unit seems ok with the speakers disconnected, then turn unit off, hook up one of the speaker leads and try it. This way you can isolate the problem.......
Posted on Jul 09, 2009
This can be shorted output transistors (common) or a defective voltage amplifier IC. WIthout taking measurements inside, there is no way for me to make that determination. In any case, this should be a relatively simple repair for a shop that repairs audio gear. Expect a parts cost in the $25-$40 range.
Posted on Aug 19, 2009
Inside the Receiver there are electronic components mounted on the aluminum
heatsink ( Audio Output Power Transistors )
it may looks like these :
MN2488 ( Q753 )
and usually paired with MP1620 ( Q754 )
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:
Posted on Feb 22, 2011
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