Question about Vizio SV470M LCD TV
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Posted on Jan 02, 2017
This means you have a dead short, It is probably a Diode in the power supply area, but without testing board you don't know. If you know basic electronics, i would say check all diodes in power supply and look hard for something burnt and replace that also. Or just replace power board, check shopjimmy.com
Posted on Dec 08, 2010
Logic Control D Board got nothing to do with this problem. This is your main power supply gone bad(usually not the sub power supply). I just repaired my VIZIO by replacing main power supply. Just remove back cover and your board will be right in the middle of the screen. Just get board part/serial # and google it. My best price was through eBay(around $100). Everything is fine now.
Posted on Feb 07, 2011
SOURCE: Visio VO420E, The left side of screen has a 6 inch wide group of colored lines, I removed the cover and the lines are directly in front of the main circuit board area (not the power supply board). Do
Lines like that are almost always a bad LCD Panel, but just to test...
Bring up an onscreen display (setup menu, volume bar, etc.) that originates from the TV ITSELF, not your cable, satellite, etc. You need something that intersects the area of the screen where the lines are.
1) If the lines are through the onscreen items as well, then it is a problem with the LCD panel. It sounds like you are fairly comfortable inside the set. First try to re-seat the ribbon cable(s) inside that are attached to the main board, insuring they are secured properly. See if that clears up your problem. If not, it's time for a new set.
2) If the onscreen items are OK, and it only affects the input source (tuner, HDMI, etc.) then it is most likely the main board that is having the problem. Replace that and you should be good to go.
Posted on Sep 15, 2012
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