We have a Toshiba 50L2200U TV. It is new even though it's 5 years old - it's been in the box until today. The power light comes on but the screen is black. There are no back lights showing either.

SOURCE: Toshiba 65HX81 would not show any pictures power light blinking

how many times does it blink?

SOURCE: Black Screen after 5 mins. of use

It sounds like the entire screen goes blank with your problem. My problem is the lower half of the screen goes blank. Do you think the SSB is also the problem? What are your thoughts about the "Video Board" or the X Board?

Do you know where to purchase parts?

SOURCE: Black box showing up in center of tv

your closed caption feature is turn on and in the text mode. either turn off the closed captions or change it from text to cc1

SOURCE: Black Box

You have inadvertently activated one of the closed-caption modes called T1 or Text 1. Find out how to turn the closed-captioning off and on and you'll be able to turn this off.

SOURCE: I have a 3 year old Maxent MX-42VM11 plasma tv with no pic/sound

swollen capasitors, replaceing will cost $500, so best to get another one, 42'' samsung will sell for about $800. the pn42a450

once a plasma has a problem, fixing it or not, more problems will occure, trust me, i am the flat pannel guru.