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Technics SA-GX350 keeps turning off and on - Audio & Video Receivers

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  • greg_nutkins Jan 11, 2009

    I've had a technics set for some years, which has been relegated to the attic as the amp, SA GX350, cuts out when it is turned up load. It will be OK for a few minutes, and then the sound dissappears. I then switch it off and on and it does the same. I was originally informed that this is normal and you have to increase the volume slowly, but this doesn't have any effect. I have cleaned it and ensured it is in top of the stack so the cooling works better but none of this works?

  • greg_nutkins Jan 11, 2009

    technics sa-gx350 turning the sound off - Continuing on the same problem, from the web it appears there may be two areas to look at, the fan and the cabling. I have removed the cover, and the problem occurs within 15 secs of turning up the volume, so the fan never gets a chance to switch on, so it can't be that - any other ideas?

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I was given a free 350 which had this problem. Simple, cheap fix. There is a small transformer on the AC input board. That is the problem. I replaced it with a standard 9 vold AC power supply (a "wall-wart") and it has worked fine since. Fan comes on as it should and the receiver never shuts down like it did.You could get fancy with an exact replacement, but what the heck, it's a $2 transformer out of the junk box.

Posted on Jun 17, 2010

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Yo compre uno en reventa y despues de un tiempo se iba el sonido del canal derecho y despues el izquierdo, lo lleve con un amigo y lo que hizo, (segun el) resoldar los integrados de las salidas y colocarles un cable adecuado a las bocinas, es aconsajable que lo haga una persona calificada, ya que es hay integrados muy pequeños o delicados.

Rene Hernandez de Xela, Guatemala

Posted on Apr 14, 2009

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I have just had the same problem, if this is the same as yours.
In my case, it turned out to be the type of speaker cable I was using. This coud have been the wrong impedance or something but as soon as I changed it, it stopped cuuting out as I increased the volume.
Hope this helps.

Best regards.

Posted on Jan 01, 2009

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SOURCE: My Technics sa GX350 tuner

Hi mate, had the same problem with my amp.. Take the top off and there is a fan at the back, there are 2 piece's of copper flat wire that touch together and these do not touch anymore so when its turned up or the bass gets stronger it cuts off as the fan should kick in at this point. If you can get these to touch again (bend them) then the problem will be gone!! I have had to do this a few times now though so this is not a long term fix.. I may try soldering!

Posted on Jan 10, 2011

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SOURCE: Bought a Technics SA-GX350 plugged it in and it

hello check the glass fuses in side the unit

regards
shaun

Posted on May 08, 2010

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