Question about Technics SA-DX750 Receiver

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Problem with the Technics SA-DX750 5.1 Channels Receiver Code f70 . fuse is ok.what is

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  • hopeton clarke
    hopeton clarke Aug 12, 2013

    yes fuse is ok

  • hopeton clarke
    hopeton clarke Aug 12, 2013

    i also remove the 2 output i.c and it still showing it

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  • Master
  • 643 Answers

Bad powersupply.

Posted on Mar 21, 2011

  • hopeton clarke
    hopeton clarke Aug 12, 2013

    what about the outputs them they can cause it too

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1 Answer

What causes f70 code


This may be blown fuze. This is an informative forum. Read answer one-third down page. Hope this helps Technics stereo receiver F70 error code CK5 Forums

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I have a Technics SA - DX750 Amp Everytime I turn it on I get an error message F70 and then it requests that I turn the power off. This is all it does now, so sound. How do I solve this issue I have...


Hi!

The F70 error certainly indicates a blown fuse inside.
The real problem is why the fuse is blown: there are only two possible reasons
1. there is a short circuit on the output (lines or speakers)
2. you have a blown output transistor (and that means some work and skills to replace).


To be sure, please change the fuse with a same rated fuse (buy more than one because it can blow again). Disconnect the speakers and turn the amp on. If the fuse blows again, it is sure something wrong with the output transistors. If the fuse remains ok, then please check all the wiring to the speakers.

Hope it helped.

Regards,

Bogdan

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This is a shorthand version of protect. See the link below. If you have more questions, please post them here and I'll respond.

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