57in Toshiba projection tv flicker all the time,what the problem?

SOURCE: Toshiba projection TV Flickers

You may have bad convergence chips in the set. I have worked on some with similar problems and replacing the convergence chips was the solution. Good luck and I hope this has helped.
Ed
NC Electronic
Mills, Wyoming

SOURCE: color problems with Hitachi 57in rear projection

One or more of the projectors lights( my guess is the green one) are either blown or in the process of going bad. Have them repaired or replqaced by an authorized tech.

SOURCE: the tv seems really dark.57in theatrewide hd toshiba

Go into the tv menu and select the Preferences menu and set your picutre preference from Theater to Normal. The TV is currently in Theater mode, wich is for viewing with no lights on in the room. Switching it to normal lightens the pictue a lot.

SOURCE: my toshiba 57in rear projection the color is off

Sounds like you need to check the convergence. You can in the MENU under PICTURE go down to the CONVERGENCE to make the adjustment, set the RED and BLUE

SOURCE: i have lines on the bottom of my 57in rear

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.
This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.
You can get a repair kit with parts and instructions from www.TvRepairKits.com