Question about Pioneer PureVision PDP-502 50 in. Plasma Television

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Pioneer pdp 502mx goes to standby no picture after power on

Hi, I turn on the main power switch, the fans start to spin, but before i get a picture (within about 7 seconds) i hear a click and the fans shut down, still no picture. and standby light on green flashes every 5 seconds. Red led diagnostics lights in back come on, first D439 then within 5 seconds D407.
what to do?

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  • 2 more comments 
  • Anonymous Sep 16, 2008

    hi my plasma switched of and the green power light is flashing but no picture

  • Frankrocks Oct 11, 2008

    I have the same problem but the green power light stay on after the TV powers down...Anyone have a solution to this..



    Thanks

  • froggy53 Dec 18, 2008

    my pioneer pdp-502 mx comes on when i plug my video game in but show only darts of graphics i hear sound but no pitcure

  • Anonymous Mar 22, 2014

    Sharp Aquos television, wont stay on. It switches on & the power light goes green, but no picture is displayed & it turns itself off again within seconds

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Contact Pioneer at 1-800-421-1404 about getting an in-home power supply replacement. This is a known issue with some plasma displays. Some of you would experience a loud pop and then the power supply fails. You get a red light below the ON button, when you press on, the red light will turn green for a second and then back to red. The plasma display will not turn on after the power supply fails. Call Pioneer at 1-800-421-1404.
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Posted on Mar 29, 2009

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I'm not receving any power to my PDP 502 MX and I read that this is due to a power supply failure with our particular models. You might want to contact Pioneer.

http://www.pioneerelectronics.com/PUSA/Support/ci.Important:+Updated+Information+Regarding+Free+Power+Supply+Replacement+for+Certain+Pioneer+Plasmas.Print?format=Print

Hope this helps.

Posted on Jul 20, 2008

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I recently purchased one of these at auction for $30.00. I got it home, plugged it in, and had nothing but a green light flashing on the stand-by button.One of the relays was also clicking about every 3-4 seconds. I removed the back panels, and lo and behold, on the power supply there were two blown transistors, as well as a blown ceramic capacitor. Hidden behind the heat sink I also found a blown voltage regulator. Now I did some research, and found this to be a common problem due to the excessive heat generated. I am going to try and rig a small fan on the board to move some of the heat to the exhaust fans. Check your boards for any blown components, typically signified by black residue. Also, be especially aware of any of the small surface mount resistors in the area which may have blown. I will keep you posted as to the progress.One more thing, I have found a great place for electronic components. It is called DIGIKEY, and they have everything. Prices are good too.

Posted on Feb 02, 2010

  • spawn_29210 Aug 30, 2011

    Did you get this model working with your attempted fix? Also, I was given one for free and it does the same thing. I get 4 red glowing lights on start up and the fans click on. Within about three seconds, the fans cut off and I am down to one red light on the main power board showing main drive.

  • Gilbert Gonzalez Dec 12, 2011

    Thank you guys for your responses. I took the back panel off but dont seem to find any blown components. I must say im no repair guy but according to my research blown components are visible. I dont really know what else to look for. I unpluged power source and reconnected with the 8 second rule to attempt to reboot with no luck. Again, the tv clicks like its turning on but I only get a slow blinking Green Light on standby mode. (no red)

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http://www.pioneerelectronics.com/PUSA/Support/Important%3A+Updated+Information+Regarding+Free+Power+Supply+Replacement+for+Certain+Pioneer+Plasmas
Important: Updated Information Regarding Free Power Supply Replacement for Certain Pioneer Plasmas Pioneer is continuing to offer a free, in-home/office power supply replacement for certain of its second and third generation plasma models listed below for customers who experience a problem with the original power supply. If a model is not listed below, no power supply replacement is needed and no further action needs to be taken.
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