Samsung TV stopped working minutes after being turned on. No power light sound or picture

SOURCE: TV Picture Goes Black

I had the same exact problem.
I removed the bulb and cleaned it. There is a small screen at the top of the bulb and it was covered with dust. Once it was cleaned I replaced the bulb and it solved the problem.
Thanks to those who posted the solutions

SOURCE: Samsung DLP 61 inch tv when turned on, no picture and sound

REPLACE LAMP

SOURCE: westinghouse 30" lcd tv has no sound no picture,but green lighton

Replace the Power Supply.

SOURCE: My Samsung LCD tv clicks over and over again but won't power on

this is common fault the capacitors have blown on main power board you can replace your self if got soldering iron
take back off tv and look for capacitors that have RAISED TOPS they look like little batteries with white line on one side and numbers (e.g 2000mf 25v ) the best way to remember which way they go back is take picture
you can get parts from charles hyde and sons web site (CHS) under general components or at a electronic shop

SOURCE: Toshiba 62HM195, Loud hum noise when TV is first turned on.

I have the exact TV and had the exact same problems. It is the light engine with color wheel that needs to be replaced, and they are VERY hard to come by for this model. Our repairman has had our TV for 5 months and still cannot locate a vendor that carries the part. He said according to Toshiba, the part has been discontinued. If you happen to find one, please post. I'll do the same.