My Vizio VT420M LCD TV has for several months has changed to a dark screen while viewing without any other problems. We always hit "power/cable" on the HD cable box and it would immediately come back without any problem. Until recently it would not budge from the dark screen, however we do have sound. I have tried the disconnect from all power for 24 hrs and had Vizio take me through a customer service directed reset by holding in the power button for 35-40 sec without any result. I have now removed the back pannel to reveal the main board and power board of which I have gone over with a magnifying glass looking for obvious bulging capacitors or otherwise. Everything looks perfect? I can purchase a main board from www.visparts.com for $169.64 (includes $20.00 core) but I want to have a better confidence that it is the problem. Do my symptoms ring any go to bells?

After reading above and under I still feel as dumb as before. We have exactly the same problem as louis823 but it helped too unplug the power supply overnight until now. Our TV was bought in Dec. 2009 so only 14 months old when the problem started in Feb.. We googled a class action regarding Vizio and found a lawyer that isplanning a class action case. Vizio has filed a clame against LG that made some of the parts, to my understanding. That makes me furious that they obviously know there is a huge problem with the TV's. Hard to tell how far this will go when they are blaming each other and we the consumer are the one that payed for this lemon. There is obviously a major defect with these VIZIO TV's. The least they could do is inform the consumer how to fix them or provide a kit. It cannot be legal & they need to recall them! We will not let this go. After reading above and under I still feel as dumb as before. We have exactly the same problem as louis823 but it helped too unplug the power supply overnight until now. Our TV was bought in Dec. 2009 so only 14 months old when the problem started in Feb.. We googled a class action regarding Vizio and found a lawyer that isplanning a class action case. Vizio has filed a clame against LG that made some of the parts, to my understanding. That makes me furious that they obviously know there is a huge problem with the TV's. Hard to tell how far this will go when they are blaming each other and we the consumer are the one that payed for this lemon. There is obviously a major defect with these VIZIO TV's. The least they could do is inform the consumer how to fix them or provide a kit. It cannot be legal & they need to recall them! We will not let this go.

The problem is the Main Board or Video Board ( Same board two names) Never buy a Vizio again. I have two Sony and one Sharp and Never been a problem The problem is the Main Board or Video Board ( Same board two names) Never buy a Vizio again. I have two Sony and one Sharp and Never been a problem