Picture is snowy on most the picture. Cannot see picture because of the white snow.

Be aware that Televisions have separate components that operate independently. Audio is separate from Video, however, they are in sync when you watch a TV program.
Snow is commonly are condition whereby the incoming signal is not being received 100%, for example, if the antenna or cable cord is loose, damaged, or even partially affixed to the hardware input; the connection is not 100% and this can result in a snowy picture. If there is NO picture at all, simply all snow with a rushing sound, you have a loss of signal and you need to contact the source provider.

Have you adjusted the contrast and Keystone. A new bulb should be plenty bright. Maybe clean the lens. There is in some types of Projectors a color wheel inside this can become dusty. But not often if you keep the filters in place and clean them. This could cause a snowy picture as well. Hard to say without actually seeing the picture to say what the issue could be. But these are some of the stronger possiabilities.

Tuner fault. Contact any service technician. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience.
http://electronicshelponline.blogspot.com/ Pull up older posts there.

check the picture settings in the menu... someone may have been fiddling with them

Check and replace its tuner. If you wish to get some details; visit the site linked here. Pull up older posts.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/

Can you post a picture that shows what snow issue is that youre experiencing that would help with diagnosis

Can you say it does it on all inputs including DVD etc?

Snow in the picture to me does not indicate a T-conn board.

My personal guess would be that there is no signal coming through to your tv or the wrong signal coming through. I have the opposite problem...we get picture (snowy) but no sound except that of snow and the Audio/Sound options are NOT helpful. Wish I could be of better help.

adjust vs and vsc voltages when tv is hot let tv fonction for a lease 3 hours if voltages do not fluctuate normally
replace y board

sounds like poor solder on the ground conections of the tuner, depending on the age of the TV frostman