Black screen suddenly - Sony Cyber-Shot DSC-T1 Digital Camera

Sounds like your screen has died. Check with an authorized Nikon dealer.

Ram chips may be bad. Test it using an external monitor. If the problem does not occur on external monitor then you lcd screen may be going bad

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If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.

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Your plasma screen is made up of 1080 verticle lines and now a few of these lines are not working. This is the screen itself and needs replacing.

1 either ur VGA card is corrupted or
2 RAM is corrupted
3 Last may be your motherboard is gone - not sure

try to plug in a extrernal monitor and see if that works if it does your backlight went out

If you need further help, reach me via phone at https://www.6ya.com/expert/david_eb7ea98642566cc6

Yeah same with mine... the front screen went black.... it started to get lines up and down... then all of a sudden just the front screen turned off! :-(

is also the small lcd does'nt work..