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I have a Sony STR-DE945 Receiver with no sound coming out. During troubleshooting, I found two bad output transistors which I replaced. I also added jumper wires between the display board, power board, muting board, and volume control board to bypass the failing connectors. Everything seems to power up fine, I hear the output relays click, but no sound. Even the built-in diagnostics tests from the service manual pass. I also checked the +/-15V and 5V supplies to all of the boards. Any ideas what to try next?

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I had a similar problem with my denon AV amp all it was were 2 little resistors but I had to scan through a lot as it was after the power supply and in the main bd

Posted on Feb 15, 2014


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SOURCE: I am troubleshooting a HTR-5830

Check for shorted out put transistors that is pulling your voltage down.

Posted on Dec 22, 2010

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Register and download the manual for free at

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