Question about Pioneer VSX-D510 Receiver

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Pioneer receiver vsx d814 amp error

Added speakers in other areas of the house switched to speaker B and amp error came on display and now speaker will not turn on

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The Pioneer VSX-D814 has a couple of Power Hybrid bricks that do all the power amplification. These are the infamous PAC011A. You should have 2 of those in your receiver.

If the amp detects some unusual activities, it may shut down the unit to prevent damage. “Amp Err” usually means some DC in the output.

Disconnect all the speakers and turn on the unit; if it acts normal, reconnect speakers one set at a time very carefully. If the unit still shows the error message you can try to reset it. If the reset works, again carefully reconnect the speakers connections. If the reset does not recover the normal operation of the unit, you may have one of the PAC011A damaged, and the unit will need repair.
The reset can be done by disconnecting the unit power cord for a few minutes, then plug it in and press “FRONT ENTER key + ADVANCED SURROUND key” continuously for 2sec.

Good luck

Posted on Apr 02, 2009

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After performing the tests mentioned prior, if you determine that the amplifier is damaged and needs replaced you can do this for about $30 USD yourself. But, I do not recommend that you attempt this if you have no prior electronics training and experience, there are many sensitive components in this unit.

Posted on May 22, 2009

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My onkyo tx-rz810 keeps going toDet.pretction mode how do I get it out of that mode


Does the display show you are in protect mode , or is a light indicating that? The unit automatically switches to standby when the
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• The protective circuit function may have been activated
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Jvc rx 5052 overload when volumes open


Could be....
  1. There's a short in your speaker wiring somewhere
  2. or a blown speaker
  3. or you are recycling the speakers from an old all-in-one system and they're too low Ohms
Check your speakers first. If they are less than 8 Ohms, or there's no label on them which gives the Impedance (in Ohms) then I'll lay money that they aren't suitable for the amp. Stop using them and get some proper 8 Ohm speakers.

Wiring shorts might be only a single strand of copper wire. But it's enough that at higher volumes it conducts enough current between the speaker terminals to trip the amp's protection mode.

Fix the problem. Go through your wiring. Check using a torch. If all looks good then it's a blown speaker.

Remove the speaker wires from the amp. Switch the amp on and turn the volume up full. The amp should stay on. Turn the volume down and switch off.

Now connect ONE speaker only. Try the amp on and volume up again. If it trips out then that's the faulty speaker. Repeat by adding one more speaker each time. When the amp trips, the last speaker added is the culpret.

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Could be....
  1. There's a short in your speaker wiring somewhere
  2. or a blown speaker
Wiring shorts might be only a single strand of copper wire. But it's enough that at higher volumes it conducts enough current between the speaker terminals to trip the amp's protection mode.

Fix the problem. Go through your wiring. Check using a torch. If all looks good then it's a blown speaker.

Remove the speaker wires from the amp. Switch the amp on and turn the volume up full. The amp should stay on. Turn the volume down and switch off.

Now connect ONE speaker only. Try the amp on and volume up again. If it trips out then that's the faulty speaker. Repeat by adding one more speaker each time. When the amp trips, the last speaker added is the culpret.

If you've done all the simple stuff, then what's left is a problem with one of the output transistors. It needs the output transistor(s) replaced inside the unit. These directly drive the loudspeaker outputs on the receiver itself, and one or more of them being shorted (closed circuit), will trigger the error on the display of the receiver, and it will not go off until the problem is repaired. They are not user-replaceable as they are PCB mounted, and thermally coupled to a heatsink. In this case, the unit is in need of service.

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You need to replace the power amp transistor or mosfet. Bring to electronic technician for repair.

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make sure you have not wired from box to speaker then to another speaker ,you should wire from switch box to one speaker then from box to another speaker, this presents the right load to the amp, if you have done this you may have a faulty switch box.

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Message


Try disconnecting the speaker that you added. If the sound comes back, then you're ok. Just don't add any more speakers. If not, then it's possible the amp is blown.

Too many speakers connected together to one output can cause an overload and either blow a fuse or trigger the protection circuitry. If the protection is triggered or blows a fuse with all speakers disconnected, then your amp is shot.

Hopefully, that's not the case. Try disconnecting all the speakers and see what happens. If you still get the error, then the amp is gone.

Hope this helps, and please rate my advice.
Thank you, and good luck!!

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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.

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