Question about Technics SA-DX940

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"Overload" I recently got a "Overload" display during running the amp. The message promps you to power-off the device. After truning amp back on it stay's powered up until I increase the volume; then shuts down again prompting me to "power off, overload"! need some help, Nostress :)

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Re: "Overload" - Technics SA-DX940 Audio & Video Receivers

Check your wires for cross polarity

Posted on Dec 25, 2008

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My sa-he9 has just started to show the overload on the display. i have changed the cables for the speaker's 5.1 but after five to 60 mins the overload display comes back on

Sounds like it's heat-related.

Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Check for loose speaker connections at the speaker as a root cause for intermittent shutdown.

Apr 27, 2011 | Audio & Video Receivers

2 Answers

My technics receiver stop playing, and display an overload message. what do you believe the is the problem ?

If you are getting an overload problem, it indicates an output load issue. Turn receiver off! remove speaker wires from the back of the unit, this will reset the protection circuit. Now power up and turn your volume right down, If the word overload stays off it means there is a short in the wire or speaker. But! if the word overload comes on "even with the wires and speakers dis-connected" it indicates a short in one or more of the audio output ic's or transistors.

Mar 17, 2011 | Technics Audio & Video Receivers

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

1 Answer


Disconnect all speakers at the receiver then turn the unit back on. If it stays on, post a comment and I will walk you thru troubleshooting. If it still shows "overload" it needs to be serviced. Hope this helps

Dec 22, 2009 | Panasonic SA-HE70 Receiver

1 Answer


Have you checked your wiring connections? Wires could possibly be touching each other making it short out and giving you that "Overload". If not that then I would say it could possibly be a fuse that has gone bad inside. ??? Just some suggestions. The reason I say that it could be the wiring is because when I hook up a system and the wires accidently touch each other it overloads the system past a certain volume. Again I would check my wires first and move on from there.

Dan Colton, Ca

Sep 24, 2008 | Pioneer SX-205 Receiver

2 Answers

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

1 Answer


internal wickman fuses blown check speakers high unts tweeters\ gone short primary transistors /ic blown

Dec 31, 2007 | Technics SA-DX940

1 Answer


Audio amps need replacing.

Sep 08, 2007 | Pioneer VSX-D307 Receiver

1 Answer

Technics SA-DX940

overload, usually means that is overloaded. i've had the receiver for about 4 or 5 years now and never had problems with it. It was sitting ontop on my tv for those 4 or 5 years, and i haver noticed it untill just recently, (when i bought a new tv and i had to get a stand for it, and i had to stick the receiver in it)that is runs very hot, very quickly; Maybe that is the problem you are having now, that the thins is older and maight be able to handle it as it id b4. Maybe you made some changes to your set up: new speakers, etc.

Jan 25, 2007 | Technics SA-DX940

1 Answer


Have a service shop check out your protection IC and related network...accordianman

Sep 06, 2006 | JVC RX-554V Receiver

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