Question about Technics SA-DX850 Receiver

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Could anybody tell me what F70 means ?

Hi there ! I'm a customer from Belgium, have been using Technics SA DX850 for like 10 years now and never had any problems till now ... What has been happening in the last two weeks is that the amp suddenly notify a "F70" error on the screen, and all sound stops (except the same "clic" you can year when you turn the amp on).

Then, whatever button I try to turn or push, it only says "Switch Off Power" ...

This F70 error may arrive every two minutes or two hours, unpredictable. I've been checking the air supply, first thought there would not be enough ventilation due to dust, but it all seems ok ...

Could you please help me ? ' can't find this particlualr error reported on the web ... If so, many thanks !!!


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  • tommycalista Dec 05, 2007

    An add : I've just noticed that the fan isn't working anymore ... Could it be the cause of these spontaneous stops ? The amp is now wide open, so there should be enough air to cool it down, but it still stops after a few minutes ...

  • glennshebang Jan 20, 2008

    I have the exact same problem in the last week with my Technics SA-DX1050 Receiver.  And it's only 6 years old.  I haven't noticed if the fan is working or not since it never stays on long enough (2-5 minutes) before it shuts down and shows the F70 message.  I opened the fan to see if there was dust in there, but no.  I opened the stereo cabinet front and back to create air flow, but it still shuts down.

    The manual for the DX1050 has a troubleshooting section that says if you get the F70 message to turn power off and unplug, then replug and turn on.  This to no avail as well.



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You must have air flow through this unit!...accordianman

Posted on Jan 14, 2008


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