Question about Televison & Video
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Posted on Jan 02, 2017
SOURCE: my video board is bad
hello mycar..the biggest problem i have found on late tvs is that you can get some service repair manuals and schematics but they do not give you anything on the major boards like the vid ..x&y boards ..logic board .i have a plasma that the vid board is faulty to and cannot get any info on it .maybe it is because they dont want to fix them..some sets are rebadged brands .try putting your model no in and see what may come up.it could possibly be lg boards in it .if so you may stand a chance..
Posted on Jun 21, 2008
Buy the green light going on means Standby is ok. Next, would be to locate the plug coming from the main board to the power supply and find the post that says PO which means power on. With your meter on that post, press the power button as see if the reading goes High, if it does then the main board is able to turn on the power supply. Next, find the plug on the power supply that goes to the inverter( the long board on the side) remove it and see if you have 24 volts coming out of the power supply when you press the power. If you do, then the inverter board is bad, if you don't have 24 v, then the power supply is bad. There are NO diagrams available for these set other than a flow chart if you can find one. A regular svc tech does'nt need a manual for these anyway.
Let me know how you do Kathy ?
Posted on May 17, 2009
The DC/DC converter went out on your set. When you take the top off of your AVC box look for a 4" X 5" circuit board mounted on the front left corner. I have seen these fail causing you white screen. Order the part from your local Sharp service center. Part # RDENCA089WJZZ
Posted on Jun 17, 2009
bryansled is 100% correct. I had the same problem, and was told by the repair shop it would cost about $500 and it was probably better to buy a new TV set. I was skeptical at first because the part costs about 150 bucks. That's a lot of money if it doesn't work. But I figured WTF, just try it. Easy to install and it worked right away. Bryansled, I can't thank you enough.
Posted on Jan 07, 2010
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