46' sony flat screen lcd

Either lcd panel or t-con.Try t-con first because its cheaper.

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.

If there is an answer to this question, you will most likely be able to find it on AVSFORUM dot COM - once there go to the LCD Flat Panel Displays section and then search or scroll through the list of models. The Bravia kdl-46s4100 is approx 6 yrs old, so what you're looking for is going to be somewhat buried and by this time the discussion thread may even be closed, but whatever information is there should be extensive, as this was a popular model when new. Note also that the "46" in the model number refers only to the screen size (46") so information for any KDL-xxS4100 (where xx = the screen size) should be relevant to yours. Hope this helps.

It sounds lcd screen problem and lcd panel (screen) will be replaced. Please check with local tv repair shop or nearest Sony service center for lcd screen replacement.

tv comes on then the screen gos black and nothing works

I think you are talking about on-screen display.
Please press " i " (info) button on TV remote to get ride of on-screen display.

hi this might be happening because of your cable if that isnt the problem then you will have to contact sony and let them know what is happening with tv

I just read in wired that the most expensive component in a laptop is the lcd screen.

my tv screen looks okay.. thin vertical color lines. are you sure you screen is broken?

Ron