KP-57WS510 57 in stopped working

I have a suggestion (this is a older set): unplug set, remove back cover.

There is a metal channel V shaped that runs left to right above the boards and just below the 3 large lens---look to see if any white residue trailing down from the lens/tubes into the channel-------GLYCOL.

If see any signs of liquid (even a little) do not touch it--toxic stuff and if it got onto the boards below the set is finished.

Usually this happens to my set when I am in HD cable channel mode after being on a non-digital ANALOG channel.

I basically reset the TV by changing to a DIGITAL cable channel -- stay on that channel for ten-twenty seconds -- then I switch back DIRECTLY to a HD channel (key in channel number directly on remote).

TV works fine -- seems to be a glitch when the TV changes modes from Analog to HD

the remote control buttons were stuck

TRY UNPLUGGING THE SET FROM THE WALL FOR 2 MINUTES THIS WILL ACTIVATE THE AUTO RESET WHEN YOU PLUG THE SET BACK IN.

Press Display / Info button on "TV original remote", such display will disappear.

it depends if its just that input or the whole tv itself if it works on other inputs it may not be to bad to fix, but if its the tv itself it depends on how old it is and how much you paid. it could wind up costing quite a bit. so take all those things into consideration. it might just be time to upgrade

Sounds like a tuner or Video output problem. What make and model set do you have.

Sounds to me like a problem in the tv, not the remote. A short maybe, or a bad connection somewhere.

I do not see any reference on this problem and I even checked with Sony. If you are on a cable box, I suspect that is the problem.

sounds like 2 different problems here. first problem sounds tuner related. second sounds convergence related. third issue (cost effective to repair ?) at this point i would replace the set. i hope this helps