Solved! My son's Xbox is plugged into my Hitachi tv..it went black screen..i unplugged it for about 10 minutes then plugged it back in

[carebearandric]

My Hitachi tv turned black turned it off and unplugged and now it won't turn on please help

 

[Alabalcho]

Get your TV' manual, and check whether there's a way to reset it using available buttons.