Question about Sony Audio Players & Recorders

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Can't switch from tuner to photo on Sony str gx50es

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1 Answer

Behind the switches perhaps has bad connections on the front panel pcb
or the switches need taken out and apart and cleaned a tricky job
i do all the time in studios

so you need to take this unit as it quite old and a decent sony to a dealer or the local tv repair man
and have him solder it up and clean it etc
and replace any capacitors it needs changed out.. also

cost i think about £50 to restore fully
or diy = £0

Posted on Apr 13, 2015

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Posted on Jan 02, 2017

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caroldon
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SOURCE: I need to turn the

Possible that the preamp is faulty and so the power amp is not able to deliver the sound.
it will be good to check the input through to the power amplifier with a audio signal test, you can now confirm where the missing amplification is ,even start from power amp will be good enough.

Posted on Sep 28, 2010

dunnbiker
  • 8546 Answers

SOURCE: Sony STR-DE845 5.1 Receiver, No Sound

Generally speaking, an amp protects itself from heat, shorts and overloads.


Overloads can be from excessive periods of high output and shorts would be wiring issues or a speaker blowing up.


You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.


If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.


If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced hands-on tech.

Posted on Jan 21, 2011

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