Question about Technics SA-EX800 Receiver

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My receiver I saying overload and switc power off

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Disconnect all speakers and see if you get the same error.
If you don't , get an ohm meter and start checking the speakers and wires.
Anything les than 4 ohms is likely the problem.
Check the impedance on your speakers to see if they should read 8 ohms or 4 ohms.
Check the wires for shorts.

If the amp says overload with all inputs and outputs disconnected, then you likely have a blown output transistor. Start checking the output transistors for shorts between any 2 pins.
To check the transistors properly, check them out of circuit.
here's a couple links to my tips and tricks to help you in that area.

http://www.fixya.com/support/r8521966-checking_shorted_transistors

http://www.fixya.com/support/r9069405-amplifier_repair_trick

Hope that helps you out!

Posted on May 27, 2011

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Posted on Jan 02, 2017

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1 Answer

Its it's a Panasonic receiver sa - xr15 it keeps on saying it's overloaded and I got nothing hooked up to it right now


It might be down to the fact that the main power amp has shorted and therefore overloading the system. It can happen if say you had some faulty speaker cable, or two wires touched together. Or it can happen on it's own.

May 14, 2016 | Panasonic Audio Players & Recorders

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Tic tic tic sound when switced on no sound no video


:That sound usually means the power supply cannot start--due to an overload or overvoltage problem. Likely a few bad capacitors in feedback area or some short in horiz. area, possibly convergence chips if a tube set.

Mar 22, 2014 | Televison & Video

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On switching my technics sa-dx750 it says switching off overload


The question is what is causing the overload? The power supply or the output devices on the heat sink?
If you have accidently shorted a speaker wire, then the answer will be output devices, otherwise it could be anything in the power section. You may find a burnt or damged device with either of the causes.

Mar 08, 2010 | Technics SA-DX750 Receiver

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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

Says overload


Your speakers may be underpowered by your receiver. Check the watts and impedance of the speakers, and the wattage of your receiver to make sure they closely match. (impedance is calculated in ohms- indicated by an omega symbol written near the wattage rating)
"Overload" may also mean that the amp went into protect mode, and that means that you're OVER-powering your speakers and it wants to protect them from damage due to impedance mismatch.
But- if the impedance and wattage match between the speaker and the receiver/amp, you should check the polarity of the speaker cables (+/-) BTW- never put 2 speakers in 1 output- that will almost always cause something like this and will sound bad.
I hope this helps.

May 31, 2009 | Technics SA-AX540 Receiver

1 Answer

Receiver says power overload, turn system off


It probably needs soldering of the voltage regulators and/or output IC.
I think that model has an access panel on the bottom (it may need to be cut out then rotated and screwed back on when done).
If it doesn't have the panel the main circuit board needs to be taken out to access them.
The regulators and output IC are mounted on the main heat sink. a little soldering and it should be good as new.

Feb 16, 2009 | Technics Audio Players & Recorders

1 Answer

SA HE200 ~ Overload at power up


First of, be sure volume is turned all the way down before or as you are powering it it.
Second if that does not work disconnect all speaker, and input/outputs.  Power the device on and see if it says overload.
If it does skip the rest of these steps, your capacitors are bad or the power supply is no longer functioning correctly.
If it doesnt, start with testing each speaker at power up.  Match the speaker to the output it goes on, power the device see if it says it. 
If it does on any speaker test it is a speaker issue or a terminal issue.  To test for terminal or speaker issue plug a different/ known to work speaker in that same terminal, if it doesnt say overload it is a speaker issue, if it does say overload it is a terminal issue.
Once you have made sure all speakers and terminals work correctly start plugging input and outputs in and test individually.

Jan 09, 2009 | Panasonic SA-HE200 Receiver

1 Answer

I have a Technics SA-AX610 receiver that says overload .


From the manual pg 27....... "The protection circuitry has functioned because the positive and negative speaker connection wires are "shorted," speaker systems with an impedance less than the indicated rated impedance of this unit are used or under severe use, such as loud volume, excessive power and in an excessively hot environment."

Nov 16, 2008 | Technics SA-EX110 Receiver

1 Answer

Technics sa-ex300 says overload ?


it could be overheating - try aiming a fan at it for a while, see if the problem stops.

Nov 30, 2007 | Technics SA-EX300 Receiver

2 Answers

Overload


I know that this post is long outdated, but I came across it and had to post.  Sorry, but the solution posted by nfanres is not correct.  Just because the KLH speakers are rated at 250W does NOT mean that they will always pull that much from the receiver.  That is just a manufacturer rating saying that they recommend supplying a max of 250W to the speakers.  The reason your receiver says "Overload" is most likely due to the subwoofer being an improper impedance for the receiver, causing the receiver to see a lower resistance in the load, and thus outputting too much power.  I could go into a detailed explanation as to why with Ohm's Law, but just suffice it to say that if you decrease the resistance, current will increase, thus the overloading (too much current draw for the receiver).
If you haven't already, try just unhooking the sub and going back to the setup you had before.  Generally, Pioneer receivers are protected, and just say "Overload" and shut down everything so that nothing fries.  If you have already tried that, then I don't know what to tell you - something must have internally tripped.  You have probably either gotten rid of the receiver or fixed it by now, but I just had to post and clear this up for anyone else who might have a similar problem.
In short, ratings on the backs of speakers do NOT mean that they pull that much power.  It's just a rating of how much you can push from the receiver to the speaker.

Feb 02, 2007 | Pioneer VSX-D411 Receiver

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