Multi colored lines running from top of screen to bottom

need to replace panel .

It can be T-CON board, ribbon cables between the T-CON board and the LCD panel.
Learn about T-CON board failure here: Please download and look at the sample of bad pictures:

http://www.scribd.com/doc/25276757/E40951307-TCON-Troubleshooting-10-22-09-OPT
http://www.mediafire.com/?zzjygannjty PDF download

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

sounds like your panel is going bad. usually not economical to repair.

I HAVE THE SAME PROBLEM CAN ANY BODY HELP US???

you must either change the t- con board, or the left board strip. it is dangerous because mines caught on fire. but most like since that strip is connected to the lcd screen u will have to replace the whole entire screen.

Three possibilities: LCD panel TFT driver circuits, T-CON board, main board LVDS driver IC. I would get a can of cold spray fro electronics troubleshooting and start cooling the ICs in the main board, T-CON board (you need to remove metal shield to get to the T-CON board to see if it is heat related problems.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx

If it flickers and changes colors like my 52" did, I removed the back panel cover, tore off the cheap foil on top and removed the t-con board. Used a head gun as I seem to fix alot of things with it now adays since lead free solder is cheap, heat the points up for about 2 minutes, replace it and throw some air circulation. I also noticed the top of my lcd has two main boards the are supposed to match up a platic pin and slide into place, the boards were warped and wouldn't stay down. I used a dremel polishing wheel, cut it in half and wedged them down and tv is running clean again.

looks like the lcd panel is damaged contact the toshiba service on your area

My 52 in regza has a vertical line on the right side as well just under 2 years old, out of warranty and to costly to repair, I paid $2500 as well. The TV has been on its stand since the day I bought it and has been moved once.
I have read of others who have this problem as well, just google toshiba regza red line, or vertical line
I Too will never buy Toshiba products and I will tell everyone I can about the **** LCD Toshiba

I have the same problem which started at about 10 months and became full blown after 14 months and now the warranty is up. TOSHIT BA 52u645