Question about Panasonic SA-HE7 Receiver

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I have panasonic sa he7. My problem is error f70 overload.There was a electrical failure in my speaker. After that reciever showed f70 overload error. Fuse is not the original one. After that every ti

I tried to replace fuses but the reciever still showed the message.

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I have he-75 Panasonic reciever and left channel not working at all
it showed f70 error after restarting no left channel
can u help me out i just want to fix it diy only nothing professional

Posted on Sep 28, 2016

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You may have a speaker connected that the amplifier cannot drive. Your receiver is compatible with speakers with 6-8ohm rating, however, even though your speakers may be operating within that range they may also have low sensitivity.
With the receiver turned off, disconnect the power cord for a few minutes, reconnect and then power it back on. And while you're behind the unit, that would be the convenient moment to inspect your speaker terminals...check for cracks, evidence of arcing and any stray pieces of strand wire that can touch the chassis or other terminals. If any of those conditions exist then that can a root cause of the problem and will have to be repaired.
You must also ensure that all of the chassis vents are not blocked and the unit does not have another device on top of it that also generates heat as well. In any event, keep it cool.
After that, enter into your speaker setup menu and adjust your crossover to a higher point for whichever speaker you had the failure. This will help control the overload condition, if in fact, it is being caused by your amplifier ability to drive your current speakers.

If after all of the above is performed and the condition still exists, try speakers with compatible ohm rating but higher sensitivity.

Posted on Dec 06, 2014

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