Question about Sanyo DP50747 50 in. Plasma TV

2 Answers

So my tv has worked fine for about a year or so and then it stopped working, wont turn on so i left it alone and unplugged for awhile thinking i needed to get a new oe then a couple weeks has passed and i plugged it i and it turned on worked just fine for a couple days but i left it off for about a day and now when i try to turn it on I can hear a click click come from the power board and the green light on the board itself will start blinking twice then off blink twice then off but the screen still wont turn on.... Any suggestions? all the fuses are fine and the caps look okay I guess so im thinking new power board..

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  • Expert
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It most certainly a power supply issue. If the board is separate you might find one reasonable, but some are all-in-one boards and only a technician who knows how to repair the electronics will help you. most of these are bad capcitors

Posted on Oct 17, 2013

  • Judah Griner
    Judah Griner Oct 18, 2013

    Okay cool, I really just needed a second opinion before I went and tried replacing all the boards cause they are all seperate and to replace the power supply board would just take disconnecting a few clips and it pops right out and the new one pops in. So thanks rick I really appreciate it

  • Judah Griner
    Judah Griner Oct 18, 2013

    Oh ad just in case do you think the a/c power cord could have anything to do with it burning out?


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  • 749 Answers

I would not jump to conclusions just from that symptom, but I would agree that the power supply board is a strong candidate for this type of problem.

In reality it is also possible for almost any other board to be the source of the problem, probably the main board being the first candidate after the PSU.

On a side note, there are several different sub-versions of the DP50747 model, something that is NOT reflected in the fixya's model categories; the differences between the different versions can be from minor to significant.

Before getting your board you *need* to either look up the sub-version (called "chassis" on the label at the back of the TV) or, better yet, open up the TV and look up the power supply board markings in it.

Lastly, here's something that may help:

Posted on Mar 08, 2014

  • Joseph Hoffmann Mar 21, 2014

    Hi, As other guys have stated the power board is the problem.

  • Joseph Hoffmann Mar 21, 2014

    Bad caps are most likely. Take it to someone who can repair this.Unless you have some experience with electronic you can do it yourself.Good luck.



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Posted on Jan 02, 2017

  • 5568 Answers

SOURCE: White screen only on Sanyo DP26648

Your reported symptoms are odd in that most failures are related to the primary power supply but that takes down both audio and video.
The backlight is obviously working (white screen) but it is no longer receiving any video information and this points to a failure of the logic (or the output of the power supply that services logic) used to control pixels on the screen.  Some screens have the majority of the control ICs actually mounted on the LCD assembly and because of very close pin distances used on dense ICs, they are often not replaceable by hand since they were installed by robotics.
I would first suspect (and hope for) the logic voltage output of the power supply to be the culprit. 
If any of you posters have had a repair done and received any kind of a detailed report (you should), would you be kind enough to post it back as a comment to this original message?   

Posted on Jan 16, 2009

  • 10 Answers


I am a military spouse and our Sanyo 42 inch plasma tv just decided to die on Super Bowl Sunday 2009, and was only a few years old. We did everything we know to do: call the company, called the repair man, etc. There apparently isn't a solution to this that wouldn't cost more than the tv is worth. So I got an attorney to start a class action:

If you would like to be compensated for your TV, if it is the same model and you have the same problem (just abruptly stopped working) please contact me @

Posted on Jun 24, 2009

  • 1 Answer

SOURCE: TV blinks and then no picture at all


Posted on Oct 11, 2009

  • 1 Answer

SOURCE: Green light blinks but no sound no picture

Power surge will knock out picture and sound if you don't have a power strip. Found out from Best Buys when purchasing another LCD TV. They have a warrenty against such problems.

Posted on Feb 12, 2010

  • 183 Answers

SOURCE: My new Sanyo HDTV LCD won't come on, although the on light is on.

If your Tv is in warranty or you have a cover plan, you need to return the Tv for repair or replacement.Your Tv sounds like it has a power supply fault.

Posted on Feb 28, 2010

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