Question about Panasonic SA-HE100 Receiver

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Overload, switch off

When I power up it displays switch off overload, even with everything disconnected.

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Re: overload, switch off

I was able to fix this problem by replacing a fuse. Remove the cover (7 screws). Directly behind the fan are 2 boards with 5 fuses on them. The boards are 1 over the other. The fuse I replaced was labeled F5 and on the top board with the fuse facing down on the underside of the board. This also fixes the error code F70. The fuse is 8 amp, 125 volt and not available at Radio Shack.

Posted on Jun 23, 2008

Re: overload, switch off

Check Connections on Output Ic,s Ic651 and
( Only if you are a Qualified Tech }
Usally these have to be replace 120.00 each approx in parts .
Labour ?? 80 to 120.00

Posted on Apr 30, 2008

Re: overload, switch off


Posted on Feb 23, 2008

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Re: overload, switch off

I had the same problem, in that the receiver would automatically shut down displaying the "overload" message. I checked the 5 fuses inside, as well as ensured that the fan was working. I was using six 4ohm speakers + subwoofer. All the speakers other than the rear center channel and subwoofer were ceiling mounted in the room.

However, I decided to check the overall impediences of each speaker line to ensure that there wasn't an issue with the speakers. It turns out that the net imediances of the four corner speakers and the front center speaker were 5.7ohms because of resistance in the long lengths of speaker wire I had. However, the impediance of the rear center speaker was only 4.7ohm -- because the speaker line was much shorter.

Thus, the quick solution: ensure that all the speaker line lenghts are the same, (to ensure that the overall imediances of all the speakers are the same). Once I did that, the receiver started working beautifully -- full loudness surround sound working fantastic.

Posted on Dec 27, 2009

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Re: overload, switch off

First: Never power up any amp with no load. Second, if possible, test the speakers themselves with a multimeter. You should get a reading of a few ohms on each...but not a direct short nor an open. Unplug the unit from the wall and repower it. It may reset something. If this doesn't resolve the issue, you've got a repair bill.

Posted on Dec 28, 2007

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Pioneer VSX-517-K Home Theater Receiver power does not turn off and everything freezes,the display lights up but no function,does anyone knows whats the problem is

ok you might be in the overload zone disconnect everything but power an try unit an functions no speakers nothing just power!Will keep an eye on this post ok!

Nov 16, 2015 | Pioneer Audio & Video Receivers

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I have Wharfdale 4000 Xarus speakers connected to my Pioneer VSX 817, the last 6 months it keeps saying overload when i have the volume further than 40db. Never use to do it... and i have re wired the...

Testing your amp at max with the speakers disconnected will not play a factor because there is no power being drawn so the amp is not being used. Those speakers are rated 90db and really pound but also draw a ton of amps. The key thing here is to keep it cool, cool, cool. Put a fan on it and keep your receiver on a hard surface with nothing stacked on top or anywhere within a foot of it. Keeping it cool will help prevent overloads or (protection mode). Back it down every now and them and give the system a rest for a few minutes. Double check the negative and positive connection on the speakers to the receiver. We all have hooked them up backwards sometime and this will have the effect you are expressing. What is the phase set at on your receiver? Set it down to "0" and go up to where it sounds best without distortion. One more very important thing. What is the Ohm switch on your receiver set at? Put the switch on 8 Ohm even though your running 6 Ohm speakers. That switch only steps down your voltage feed to the power selections which will hamper the overall dynamics and fidelity of your receiver. This switch is really not even necessary. Putting that switch at 8 Ohms will give you more headway and aid in keeping your amp cool.
Regards, Tony

Mar 24, 2011 | Pioneer VSX-817-S

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Screen displays "overload, switch off power." Have

Hi Laurel,

Overload in other unit protect error code. This will appear once the processor sense a malfunction either on the power supply or on the load (high chance is the output IC). DIY steps are as follow to determine where the fault is : 1. Allow the unit to cool down for an hour. Give proper ventilation and keep away all obstruction from the vent to have a sufficient air flow. 2. Disconnect one at a time the speakers, inputs, from the unit while powering it on.

If the unit back to normal again then you've confirmed that any of the above caused the error code. If #1 is the caused, you have to check also the exhaust fan(if installed), clean it as much as possible, replaced if faulty. If #2 is the caused (speaker) check the wire and speakers for short, (input) check the RCA cord for short or replaced if necessary.

If the above simple fix didn't cure the error code, you can try the next steps if you are an electronicsenthusiast. Now after removing the cover, you have to concentrate first on the power supply board. Look for bulged electrolytic capacitor. Leaky capacitor will affect the regulation of the supply and will trigger the error code. Look for dry joints. Check it also in the pre-amplifier stage, main output board where a big heat sink is located. Next disable the output amplifier stage by disconnecting the supply. If the unit come out, make some re-soldering on the board, spot the cold solder and dry joints and then try to connect again. If the error code appear again, high chance that your output IC is faulty but still to be confirmed. Using the disoldering pump and soldering iron pull-out the output IC from the board then try the unit. If the error code disappear, confirmed that your IC is faulty.After trying the abovesteps-by-steps guide and still the symptoms persist this is the time for you to send it to repair shop. Remember that your unit has a lot of parts and only some basic steps have done, leave the expert to troubleshoot the entire unit.

Hope I helped you.

Have a nice day!

Thanks for using Fixya.

Feb 24, 2011 | Panasonic SA-HE100 Receiver

2 Answers

Have recently had an "overload" displayed. Have

Usually receivers go into overload due to a bad speaker make sure you disconnect the speakers also to make sure its overloading from a bad speaker. If the unit still shows overload even with all speakers disconnected, then your main amplifier output has a short usually a shorted output transistor is the cause. Unplug the speakers one at a time to and turn the unit on after disconnecting one of the speakers , to determine which speaker is at fault.

Jan 23, 2011 | Panasonic SA-HE200 Receiver

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My Technics AV Control Receiver SA AX530 is in overload

An amplifier should never be turn on without speakers, it will overload internally.
make sure speakers work and try again.

Dec 04, 2009 | Technics SA-AX530 Receiver

1 Answer

Overload displays on the screen

If it say's overload with no speakers connected and the unit on, it needs service. If you need further help, post a comment and I can help you troubleshoot.

Aug 11, 2009 | Panasonic SA-HE70 Receiver

1 Answer

Problem with HT-X250R

It sounds to me like it is overloaded and won't come back on because it has overload protection. Check your connections and make sure the outlet or power strip it's plugged into isn't overloaded. I would disconnect everything from it and turn the volume all the way down and try to get it to come back on. Let me know what happens.

Feb 17, 2008 | Audio & Video Receivers

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Power on but no display on Denon AVR 3705

By now the folks who asked this have certainly solved their problem, but in case anyone else has this same question:
If the color change from red to green on the Power button indicator light and stays that way, the receiver is most likely working fine, it's just that your front-panel display is OFF.
1. Check the DIMMER mode by pusing the buttom on the front panel -- it may be set to OFF.
2. Push the PURE DIRECT button on the front panel (or remote control) -- it may be ON, which turns off almost all of the front-panel display. (Alternately, change the AV source, which turns Pure Direct OFF.)
HOWEVER if the power light flashes rapidly, the amp's overload protection circuit may have been triggered by a feedback loop or other problem, such as a shorted or bad cable connection. Turn off the power and unplug the receiver. Look for problems starting with shorted speaker wires or cables. Then make sure the receiver's not still hot (wait 5-10 minutes to let it cool), and remove obstructions or anything blocking the top vents. Plug it back in and power up again. Immediately change the Source selector to something unconnected, and turn the Volume DOWN just in case there's a feedback loop (hum/squeal/noise that can overload things and cause the protection circuit to trip again). If you can see the display, go to a low level (around -50dB should be fine) before the delayed speaker amp output clicks on. Then carefully switch back to the problem source -- if that's the problem, switch off again immediately and re-check all of the cable connections at both ends, the receiver and the source component, and make sure you don't have a feedback loop due to a recording device feeding back a signal. All VCRs and CD/DVD-recorders should be hooked up to the VCR, DVR or TAPE/CD-R "IN/OUT" jacks with IN being connected to the cables marked OUT on the deck and vice versa. (That confuses even us experienced guys sometimes!) Also, no MONITOR video or audio outputs should be connected to the recording decks, nor should the TV outputs be fed back to the recorders. The same goes for the digital IN/OUT jacks for CD recorders; use only the same number IN as OUT for each component (Optical IN/OUT #4 and #5 are the two digital IN/OUT pairs on the AVR-3803).

Jan 22, 2008 | Audio & Video Receivers

4 Answers

Amplifier displays "Speakers are overloaded" and switches off

Either the amplifier protection circuit is kicking in due to a fault, or your speaker wires are shorting. Could also be a fault in a speaker - shorted turns due to overdriving. Check amp with speaker leads disconnected, and if OK, see above.

Dec 10, 2007 | Panasonic SA-XR55 Receiver

1 Answer


disconnect the output devices and see if it clears. If it does, connect up the disconnected devices up till the reciver overloads again.

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