Question about Pioneer VSX-456 Receiver

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I am getting an "OVERLOAD" message on my unit. It keeps turning on and off. The unit only works on a very low volume setting.

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  • Pioneer Master
  • 1,114 Answers

The most common problem found on FixYa for Audio VideoI am getting an - 2_bing.gif Receiver's is:

My receiver say's "Protect" or turns on then off. What's wrong? Seven times out of ten it is a shorted speaker or speaker wire. To determine your exact problem, the first step is to disconnect all speaker wires "at your receiver" Next: Turn the receiver back on. If your receiver still says "protect" or turns off, it needs to be serviced. If your receiver stays on; reconnect your speakers one at a time and power back up after each speaker. You may find that after reconnecting all speaker wires it works! Most commonly the small braids of wire from the + to the - have touched and have caused the problem. In some instances, you noticed the problem only when turning the volume up. either way, make sure the exposed wires to your receiver are no longer than 1/2" long and are completely under the screw down terminal or slide in. When you've found the wire or speaker with the problem, your receiver will go back into "protect" At this point, disconnect the wire from the speaker at the speaker that may be causing the problem then test again.* Note* Make sure speaker wires do Not touch each other as this Will cause a short! If you turn the receiver back on and it stays on, you now know the problem is in your speaker itself. To test your speaker, you will need a multimeter. Set it to ohms resistance and touch the speaker terminals, if there is a short internally the meter will read "1......" If it's an analog meter, it will peg to the right. There's your problem. Now, within any speaker there are quite a few possibilities as to what could be causing the problem. Most common is a blown coil and the speaker needs to be replaced. Some speakers have internal crossovers (usually floor standing speakers) and may have a shorted or burnt board (usually very visible brown burn marks on the board) and can possibly be repaired if your handy with a soldering iron. Now, if you disconnect the speaker wire at the speaker and it still says "protect" Check your wire for the obvious cut or nail thru the wire if possible. If your system has wiring that runs behind walls, you may need to use your meter again. Disconnect the wire at both ends, keep the ends separated, put your meter on ohms resistance and touch probes to the + and - wires at one side. If the meter pegs to the right or reads "1...." the wire is shorted and needs to be replaced or repaired at the short. Hope this helps.

Posted on Jun 03, 2010

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Posted on Jan 02, 2017

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Technics stereo Integrated Amplifier SU-G75 powers up few seconds then overload light appears and a clickng noise coming out of metal boxq with tag FP-3 M V RTP1P5C015 on it iis it supposed nto make c


If the receiver works at low volume, but goes into OVERLOAD and shuts down at higher volume, it means you are player the unit too long and too loud. Try yo keep the volume down to a reasonable volume.

Nov 15, 2014 | Audio Players & Recorders

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Keeps turning itself off


If Both speakers are working at a low volume and you turn it up and it clips and shuts off you have one of 3 problems. you have over driven your speakers and one has shorted the voice coil but still will work at low volume, its a overload protection for ohms short in receiver. unhook each speaker and turn balance to the one hooked up and turn up receiver if it shuts off do the same with other speaker to determine which side is bad. 2 speaker wires are touching at speaker or receiver. 3 a bad receiver output transister. Good luck.

May 23, 2010 | Sherwood RX-4109

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Turn on, in a few seconds Flashing "OVERLOAD"


Overload  usually only appears if you have been using higher volumes for a period of time and this trips to protect your speakers and amplifier. Turning off your amplifier and leaving for a while and it automatically resets. other wise a would check your speaker cabling to see if any wires are  touching shorting out the circuit. Try removing you cables from your amp then turn on. If it turns on without Overload appearing the problem is between amp and speakers. Check your cables at both ends and while at it give them a clean then hook up everything ( Amp should be off) then turn on the amp and see if you get message. If you still get this message you could have  dry/ broken soldering on the inside and the amp is detecting a dc short in the system. This seem to a common thing these days. In which it will be a repair job.  Low impedance speakers or speakers that have a wide impedance swing when they are running at high volume can cause a amp to trip if it hasn't got enough current to drive low impedance speakers. Hope this has been of help.

Nov 17, 2009 | Pioneer VSX-455 Receiver

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Technics SA-AX7 OVERLOAD problem


hello there are 2 big capacitor behind the metal heatsink see if one has swelled up if so change them both then check the output chip to see if there are any dry joints then when you've check all and still the same then you may have to change the output transistor g ood luck

shaun

Oct 01, 2009 | Technics SA-AX7

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VSX-D608 Overload and shutdown


Overload is displayed when the amp draw is excessive, and can be caused by different faults.
when Overload is detected, the protection circuit will shut down the unit to prevent further damage.

The first thing to try is hard reset. Shut down the unit for about one hour to drain power completely.
This can fix minor problems that can cause overload, for example electrostatic charge accumulation on internal capacitors.

If that does not fix the problem, then you must find the fault.

Overload can be caused by shorted speakers, wrong impedance speakers, or by a contact on speakers wiring.
Check speakers connection and test different speakers with 6, or better 8 Ohms impedance.

Another test can be done by unplugging all speakers, and reconnecting and testing them one at a time, at a very low volume.
No more than two 4 Ohms speakers can be connected to the unit, or you will get overload.

If the speakers are OK, then preamp, shorted input/output connectors, main power supply or faulty output transistors can draw too much amps causing overloading.

In that case it is recommendable contacting Pioneer at the number listed on the owners manual.

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Overload at medium (4-6) volumes. Can you adjust or disable the overload protection on these Technics amps??


try this mate:
http://www.electronicspoint.com/googlesearch.php?cx=002919058480771089906%3A03mranmmdze&cof=FORID%3A10&ie=UTF-8&q=Technics+SA-GX550&sa=Search#862

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RCA Wireless headphone triggers off after 35 seconds of operation


ya the volume of your source is your issue.
if it is too low, the unit cuts out after 45 seconds or so...
crank up the volume and turn it down on your headset

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PROTECTION MODE


The unit may be experiencing an overload caused by a short circuit, internally or externally. Try disconnecting all the speakers, then turning up the volume. If nothing happens, connect one speaker at a time and turn up the volume to see if you get more sound. You may have a speaker that has shorted internally and this will help you discover the bad one. However, if when you have all the speakers disconnected, and the unit still goes into protection mode with the volume up, then there is a problem with the unit itself.

Hope this helps, and please rate my advice, good OR bad.

Good luck!

Feb 04, 2008 | Audio Players & Recorders

1 Answer

Jl amp


the overload protector of your unit it so sinsitive try to cutof the overload relay and then observe 20 min. monitor the allominum heatsink the temp. normal

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JVC RX-7000V


As per the instruction manual the overload is there because of high volume condidtions and your over heating the unit. They recomend to turn down the volume shut off the reciver wait a few minutes and turn back on the unit with lower volumes. Second it states that the peaker wires or speakers could be shorted so make sure the speakers are good and the wires when you connected them to the reciver are not shorted. If all is hooked up properly then you have a problem in the output stage of the amp and its gonna need service unless you know how to replace the defective output devices? If not Go online at the addy I give you to find about service parts or service manuals.. Good Luck http://www.jvcservice.com

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