You will need to have the set diagnosed as there a number of things could cause this. But I would say you're looking at a power supply or main board problem. It is also possible that your key controller (side buttons) is defective. I take it the TV doesn't turn on with a remote either?
SOURCE: 46" LCQ VIZIO WON'T TURN ON ALL OF A SUDDED
IT SHOULD BE UNDER WARRANTY. TAKE IT TO AN AUTHORIZED VIZIO SERVICER.
SOURCE: my vizio vx32l will not turn on. vizio logo will
The main board has failed. Replace the main board will fix the problem.
By the way, where did you buy the TV? If you have bought it from Costco then try to give them a call to see if it still under warranty.
Hope this will help.
SOURCE: no power to vizio flat screen 32HDtv. TV worked fine nite before.
Most likely the TV has a power supply related problem. It's possible that it maybe a bad capacitor or transformer on the power supply board. Or, something simple like a blown fuse inside the TV.
But, I can't say it's 100% the problem because I can't actually look at the tv over the internet. I can only make guesses with the symptoms.
You have a few choices:
1. You can again try leaving the TV unplugged for 30 - 45 minutes so the TV can discharge and reset itself.
2. If by chance the TV is still under warranty, go that route.
3. If you have some electronic experience, if you can find and purchase a Service Manual over the internet; It will help you diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you circuit diagrams, schematics, test points, and part# lists.Usually, cost under $20. And most cases the new part cost less than $15 by searching on the internet with the part number.
4. Pay a TV shop to do the repairs. It maybe costly, but get an estimate of how much they will charge. That way you can decide if it worth repairing or replacing the whole TV.
I hope I shed some light on the subject for you.
SOURCE: vizio p42 type sp42a nov 2004 hd tv
The sp42a is a plasma tv not an lcd. check the psb voltages first then move onto the ymain and buffers.
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