Question about Sanyo DP50747 50 in. Plasma TV
I'm having a problem with my 50 inch Plasma 720P TV. If theTV has been left off for more than a few hours, whenever it is powered back on it flashes and shows a faint ghost imageof the last channel it was on.
The only way to get it to stop flashing is to unplug the TV or cycle through the inputs at a quick rate until the flashing stops. If this isn't done the TV powers itself off. If you continue to try and turn the tv back on without cycling or unplugging first, the TV will shut itself off and not turn back on at all unless you unplug it.
It's not "burn-in" as the image isn't constantly there like it would be if you left it on the same channel all day everyday. I've tried resetting everything to the factorysettings and running the built-in burn-in fix and neither corrects the problem.
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Posted on Jan 02, 2017
You should try and download the users manual if you do not have one...I remeber seeing in it that after hooking every thing up, you have to do the channel search twice before the unit will work properly..This is highlited in the manual with correct hookup diagrahm..
Posted on Aug 10, 2007
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
This set has LG insides, it will have failed on either the Y-Sustain PCB or the Z-Sustain PCB.
Repair estimates should be $250 - £350 depending on which has failed.
Stick it on eBay, it will fetch good money faulty.
Posted on Sep 06, 2009
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SOURCE: I have a Sanyo 50"
Thanks for using FixYa. From what you have described it seems to be the issue with Y-main however, buffer and the logic board should also be checked. These boards are located on the right side of the unit and to check them you’ll have to open the back of the unit. Once you have opened the back also check for any blown/bulged capacitors. All this is only recommended if you have electrical expertise & know how to solder/re-solder components as these units contain high voltages even when in off position. Please do accept the solution if the issue is resolved or post a comment for further assistance.
Posted on Aug 29, 2010
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