Question about Pioneer Vsx 921 K Av Receiver Black

1 Answer

Power on problem

Need to always press the power on button a couple of times to switch it on. The display comes for a few seconds and then goes blank. Once it switches on, it works fine. If it does not switch on after a couple of tries, it goes into the protection mode and will have to reset it.

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  • 794 Answers

Sounds like a defective switch.
To check it, with the power cord unplugged from the wall outlet or power strip, use an ohm meter to take a resistance reading across the switch when you press it to the "on" position. If the reading drops to zero, its a good swithch; if you get a high reading- the switch is bad. You may want to press the switch on and off several times while taking the reading to see if you can reproduce the fault. It may even be a loose solder connection to the switch.
Please make sure you run this test while there is no voltage power going into the stereo because serious electrocution and death can occur.

Posted on Nov 26, 2013

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: stand by button flashes but receiver wont turn on

I have vsx-d812 that has an AMP ERR in error menu. the troubleshooting was found to be Q696 and Q697 in the DC prot. area on "C" board, up near front toward diplay in center of c board. You can get access to error codes on VSX pioneer unit by pressing "enter" and "adv. surr." simultaneously for 2 sec. The display should show what error code you are experiencing. I believe there are three diff. error codes. 1) AMP ERR 2) OVERLOAD 3) BOAD ERR (not mistyped) I hope this helps pinpoint error code for ya.

Posted on Jan 12, 2008

  • 1 Answer

SOURCE: reciever powers off after turning on

I had my computer RCA outs connected to the receiver. Wasn't a problem at first, but removing them solved my problem.

Posted on Sep 30, 2008

Benimur
  • 6966 Answers

SOURCE: I have a Pioneer SX-850

Hi and welcome to FixYa,

That distinct click is the relay activating. It is the built-in protection common to designs of this period. The only time the relay will not activate is when the protection circuitry has detected a fault in the amplifier/output stake. This would call for replacement of the defective components most likely a transistor complimentary pair or in some instances a large IC power pack.

Good luck and Thank you for using FixYa.

Posted on Dec 07, 2008

  • 1 Answer

SOURCE: Pioneer VSX 915 powe off

Had a power surge last night and got the same problem. Unit wont power on and has a blinking blue light on standby button. I found the solution from the service manual for a similar model.

Hold down ENTER and ADVANCED SURROUND buttons.

This resets the DC overvoltage sensor and bingo the unit comes back to life again.


Posted on Feb 05, 2009

dragster301
  • 12 Answers

SOURCE: Pioneer VSX-918V-K Standby Light Flashes but will not turn on.

unplug it and press the power buton and then hold the power button, and while your holding the power button, plug it back in

hope it worked!!!

Posted on Jul 31, 2009

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