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Amp cuts out

When i turn the volume up on my technics su-ch700 it cuts out. This happens without any speakers connected

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  • gratinman Feb 02, 2008

    By cuts out i mean it switches off and goes into standbye

  • Anonymous May 19, 2008



    when i turn the volume up on my technics su-ch700 it turn of and display an "E". This happens without any speakers connected

  • Anonymous Jun 10, 2008

    please help. I have same Problem

  • Anonymous Jun 10, 2008

    Please Help. I Have same Problem

  • Anonymous Jun 30, 2008

    Same issue CH 700 amp. The systems shuts down with E 11111 message on the screen. Damn annoying as its a nice old system

  • Anonymous Jul 03, 2008

    Mine has exactly the same problem. Will try the fixes and see what happens. Must be lots of us out there!

  • alejandra5 Nov 22, 2008

    I have the same type or model and it shuts off once I rise the volume

  • Anand Srinivasan
    Anand Srinivasan May 11, 2010

    what do you mean by saying that it cuts out...

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2 Answers

The fan is ageing and putting noise on the protect line. Replace it or put a 100 uf cap across the fan at the plug. Beware polarity is marked wrong on p.c.b.

Posted on Feb 23, 2008

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  • 152 Answers

Most of these type systems have feedback path which shuts down the system once there is excess heating in the regulating transistor... i think there must be something getting shorted when u turn the volume up.....

Posted on Feb 04, 2008

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Amp cutting out


You have one of two solutions.

One: you have the speaker ohm load lower or higher than the amplifier will support. You should check the ohms rating on your speakers vs. the amplifier. Make sure you match up the rates for proper operation. You can also try out a different set of speakers and see if they work properly.

Two: You have an electronics failure within the amplifier. You need to obtain the electronic knowledge and schematics for servicing your unit or bring it to a repair facility in your area.

Just as an FYI.... double check your speaker cables and make sure that neither the left or right is shorting together. Make sure the bare conductors are not touching anywhere. A pinched or damaged speakers wire can also cause the symptoms you are talking about.

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