My Vizio 42″ Lcd Tv Just Went Out. No Picture But The Audio Works. Whats Wrong With It?
October 15, 2009 by Rich
Filed under Frequently Asked Questions
Inverter!
When a LCD has sound but no picture…it’s the inverter! The inverter is what helps power the backlights. Usually what happens is one or more capacitors will go bad, causing the inverter to not work…thus no backlighting!
If it’s still under warranty, contact Vizio!
If not, then the cheapest thing to do is to remove the inverter board from the TV and take that to a repair shop to have them replace the bad components. The inverter is part of the power supply and connects the lamps to the power supply. And the power supply is located at the back of the TV where the power cord goes into. You’ll need to remove the back panel of the TV! All that should be holding the inverter board on is a couple of screws and a wire harness.
Hope this helps!
Vizio is a low brand TV, go for a better brand next time.