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Sony STR D590 Receiver

Whe I play it loud it coutsw off & a red light statrs blinking on the face. I cut it off & it plays again. What is wrong?

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  • Anonymous Dec 18, 2007

    I have the exact same problem with the exact same Sony stereo. Both the Cd player and AM radio cut off with red light on using 2 different sets of speakers: medium-sized mains and small remotes. With unit on and speakers off the red light does not come on.

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Hi there, it would appear that you have a overheating problem and the amp is shutting down. If you have added extra speakers, the impedance may be to low. Try a fan blowing into the amp. But first make sure you have not got incorrect speaker impedances

Posted on Aug 28, 2007

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That sounds like a fault FET or power transistor, or a cold solder. When the volume is raised the voltage is send higher current/voltage to the base, there-by activation the transistor. I have the same issue as well, but was able to correct it.

Since it is indeed in the power section the heating makes the solder joint contract, cooling would make it expand, making the solder joint loose loosing contact when the unit heats up.

-Marc Ricciardi
bacs@comcast.net

Posted on Aug 01, 2008

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