I was told many things it could be the panel or t con boards so I did some more research and it always led to same thing so a local guy who repairs tvs told me before paying for parts or anything like that take the back off and disconnect all the connections wait a few minutes put them back on and my tv works again.. my problem was when I would turn my tv on after a few minutes the screen would jump around with horizontal lines then go away and come back after a few more minutes, what can cause that is loose cables inside the flatscreen itself or even dust that builds up can interfere with the picture I highly recommend you trying this before paying to have it repaired with new parts or throwing it out as my tv is bran new 60 inch flatscreen RCA it may seem like alot to do and technical but I'm not a technology person it just takes 15 minutes out of your time to take screws out disconnect cables put them back on and put the back cover back on and from doing that my tv is back to normal