Lost Picture I have a ws-55807 that has lost its picture. When I bring up the menu it is concaved and shows all letters in red blue green. Its like the convergence is way out of alignment. What do you think is wrong and how much to repair. Thanks

Jackpot. Sounds like your red color gun has died.

After replaced new lamp , it has no picture only audio sound.?

need replace conv.IC:stk392-570.good luck.

IYou have to have your comcast box tuned to a channel that is broadcast in HD. On your Comcast remote hit menu. This will bring up several icons, one is HD. Select that icon and it will bring up the TV Guide for just HD channels. Select one and tune to that channel. Once your on that channel use your original remote and hit menu, then advance features, then go down to video display and change it from 480 to 980 or 1080. Let me know if this helps.

Unplug the set, remove all other audio/video components, go open front door, and roll it out to the curb.

im just going to assume you have it hooked up wrong, call a TV person and they can come look at it, its really hard to do this kind of thing over the internet

This is what is known as convergence. a projection tube ussally has three picture tubes.. red green blue. they all have to align. the concave picture indicates complete loss of convergence or convegence power supply. First question on these sets Do you have the convergence option in the customer menu under setup. if you do not this is a indication of the common "FL231 fuse problem" and inexpensive simple repair. I have wrote and artilcle on this under my tips and trick section. If you do have the option then next does autoconvergence work. in you case i would not think it work. under blue and red manual convergence does the crosshairs move. if not then this is indication of convergence power supply board. if they move at all this may indicate a convergence amplifer problem.

Download your service manual from link
and read troubleshooting instructions.

need make and model

does the menu show up?