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PIONEER PDP-434PU Worked fine then one day turned unit on and it will not power up. No secondary power supply voltages, and don't see Anything burn't or bad looking capasitors. Any suggestions? Thanks.

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  • Jeff
    Jeff Oct 01, 2009

    Hello, Please see all comments. All fuses are good. Has anyone worked on one of these Pioneer TV's before? It has the seperate Audio-Video Processor box. Please comment if you have. Very high-Tech. Any Suggestions on my origional comment? Thanks.

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It won't power up without the media receiver. The screen has 2 accompanying cables one for AC cable and the DV1 input controls into the media receiver / The Remote, controls the media receiver to power up the screen. Any of Pioneer media receiver will work with the display regardless of model. so check out all the connections.remove and reconnect the wires again.
---------- the Plasma will work fine alone without Media Receiver. Plug the Plasma into a DVI port of a PC/Laptop for example and it will work. check out running a Pioneer Plasma of a Divx Media Box/Laptop and see if it works . Just make sure you power up your source unit before turning on Plasma otherwise it will turn off again and will flash Red and Green squares on the screen. If the picture is not in sync just adjust it like you would adjust the resolution on the Computer.
If your Computer or Laptop has no DVI out you can use this item availbale at NewEgg to adapt VGA out to DVI

14-999-504 VGA ADAPTER DVI-CRT DVI F / HD15 $3.99
---------------

thanks.keep updated.

Posted on Oct 01, 2009

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  • Master
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Hi,

A blown internal fuse would cause things to appear completely dead. It is not intended to be user serviced. If you do find a blown fuse, never replace it with a larger size. Using an oversized fuse may cause additional damage.

If the same size blows again there is some sort of fault, typically something like a shorted diode, electrolytic capacitor, or switching transistor.

There could be more than one fuse. Sometimes there is one on the AC power coming in, and one or more on various outputs from the main power supply. The AC line fuse may fail simply from a nasty surge coming down the power line. Other fuses usually blow from internal faults.

If your TVis completelt dead you have to check the fuse, or i f you get any color indiaction on your LED, like colr changing from green to red etc, please leave it as comment, we may solve your issue

RNJ VINODKUMAR

Posted on Sep 30, 2009

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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.
If you own or use a plasma listed below, please call our toll free hotline at 1-800-421-1404 to arrange a time to have your plasma's power supply upgraded at your residence or office at no charge.
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The issue with the power supply in the plasmas listed above does not pose any health or safety risk. Pioneer has received reports that the power supply in the affected models may fail. In some cases, a loud popping sound can be heard when a power supply fails. After the power supply fails, the plasma is no longer operable.

Anyone with questions can call Pioneer's toll free hotline at 800-421-1404.
We apologize for any inconvenience.

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