Why is my vizio tv flickering like a strobe light after 20 min of use?
Either inverter board fault or power supply fault!
SOURCE: My vizio tv flashes like a strobe light
Sounds like your Backlight Inverter Board is going out, saw one on ebay for about $55 : ) have to get the one for your model tho...
SOURCE: vizio television screen flickers like a strobe
lcd sets use florescent tubes to light the display and, a ballast to power the tubes just like the lights in an office ceiling.
the tubes are called cold cathodes and, the ballasts are called inverter boards. replace your inverter circuit board it connects by wires to the cold cathodes so; isn't hard to find.
SOURCE: Flickering problem with Tv.
There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc. Look for 5vdc, 12vdc, and 24dvc.
http://en.wikipedia.org/wiki/Capacitor_plague
PARTS: http://www.shopjimmy.com/catalogsearch/result/?q=vizio+l32
Please post back what you find.
SOURCE: my vizio gv42l fhdtv 10a picture flickers like a
you need to check first the power supply board whether the output supply 12-24vdc for the inverter board is stable and not flactuating..you can measure the output voltage with a multitester..you get a voltage output of 12-24 with the inverter board is connected or loaded to the system.be carefull of the high voltage at the inverter board..once the output is stable replace the inverter board or you can measure the output of the inverter be very carefull..the output range upto 500vac.be carefull..if the high voltage is stable replace the lamps...tnx and good luck..
Testimonial: "Thanks again. :)"
SOURCE: My Vizio VX42L is flashing like a strobe light.
Mine did the same thing. Remove the stand and back of the tv. Be careful with screen do not lay on hard surface and scratch. When you take the back off you will see a board on the left side and a board on the right side. They are labeled slave and master. Remove the ribbon cables and take board out. There are 2 capacitors on each board (about an inch long). These are probably all bad (ends bulged a little with black stuff on bulged end). Radio shack has them for less than $2.00 each. turn the board over and you can read the size of the capacitor. You need someone who can use solder wick and remove all four capacitors and solder in new ones. Notice how the capacitors are turned. Each one is labeled with a dash for negative. Make sure you bend new capacitor connectors the same and put back in the same way. Put the boards back in the tv and attach all ribbon cables. Put back and stand on. hook up your power and cable box and you are ready to watch tv with no more strobe. Me, my husband, and son did ours last week. I looked up the problem on the internet, husband removed stand & back, son with the steady hand did the soldering. Family project that went well for once.
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