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F70 Error on SH-AC300

Hello... I have a problem on my SH-AC300. It displays F70 and unable to process any of audio input, either digital nor line (analog) sources. Does anybody know how to fix it? Many thanks, Don

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Re: F70 Error on SH-AC300

Unit has a blown internal fuse. replace it with exact type of fuse and see what happens. if it blows again, it will need to be returned to a service agent

Posted on Dec 10, 2007

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Its showing F70 error on display. Only workd on DVD mode, when i turn it on any other mode it just shows F70, switch power off. All fuses are ok, no any visibly damaged components

The fuse is a part of the problem it is for safety measures
the problem is in between the power supply regulators, capacitors and power amplifier circuit board.
usually a regulator or an output transistor can cause this error.
hope this helps.


Aug 08, 2014 | Panasonic SA-HE70 Receiver

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F70 error checking fixed contacts fuses.

Oct 04, 2013 | Panasonic SA-HE7 Receiver

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Panasonic SA-he75, displays an F70 error.

The F70 error is a code for "protect". See the link below for a general explanation of protect mode. Specifically for your unit, the output amplifier IC has failed. This can be replaced, but the parts cost will be in the $100 range. Please update this if you have further questions.



Oct 08, 2010 | Panasonic SA-HE75 Receiver

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I have a digital audio processor technics sh ac500d without remote. This item is stayed at midnight mode. Have you a solution for a day listening.

Monday, september 7th 2009
Thank you but I have bought a remote control ; I think this is the best solution.
Friendly yours.

Sep 05, 2009 | Technics SH-AC500D Receiver

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How to play dts/dolby digital on HK AVR5

I believe he avr-5 has 6 channel inputs, what you will need is a dolby digital 5.1 and DTS outboard surround sound processor, say an item as the Technics SH-AC500 decoder, a Harman Kardon Signature 2.1 DTS version outboard processor/preamp, and many others on the market by different manufactors, Run the discrete audio outputs from the Processor into the AVR 5`s 6 channel inputs, select 6 channel input or DVD inputs on the receivers selector and your good to go. Be sure you are playing Dolby Digital 5.1 or DTS encoded material.

Feb 08, 2009 | Harman Kardon AVR 100

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It could be an overload from two speaker wires crossing, check the owners manual for error codes.

Dec 22, 2008 | Pioneer VSX-818V-K Receiver

1 Answer

I am trying to set up a SA-TX50 A/V receiver, SH-300 processor, DVD player to my Philips LCD. I also have a digital cable box, seeking assistance. Mike

1. cable box video out to video 1 in on the lcd , audio out to reciever input 1 ( tv, vcr , or what you want it on )
2. dvd s-video output to lcd video 2 s-video input , dvd audio out to reciever dvd/cd audio input , and add the optical or coax cable digital audio for dolby digital surround sound


Nov 26, 2008 | Technics SA-TX50 Receiver

1 Answer

F70 problem

Look up "Panasonic F70 error" on Google and you will find plenty of discussion about this problem.

The F70 is a blown fuse error. It looks like you can can the fuse yourself, if so inclined, otherwise send it to a service agent.

Aug 03, 2008 | Panasonic SA-HE70 Receiver

1 Answer

Technics SH-AC300 Connection to Power Amp & Pre-Amp

The problem is, that your SH-AC300 needs an amp with 5.1 input (but no decoder). For this purpose technics delivered SA-AX710.
So if you'd like to use your current equipment it would be impossible.
The only option is for you to buy 2 more Power Amps (SE-A900S), so that each of 3 amps would take care for one part of music. (one for FL, FR; one for RL, RR; and one for sub and center).
Another option is for you to buy SA-AX710. Then all the problems would be solved with it.

Jan 15, 2008 | Technics SA-DX950 Receiver

1 Answer

What is F70???

F70 means Blown Internal Fuse change the internal fuse and that should solve the problem if not you may have to change the output

Oct 30, 2007 | Technics SA-DX750 Receiver

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