Panasonic hdtv 1080i keeps turning off on it own

My 7 year old Panasonic HDTV 1080i keeps turning its self off. I hit the remote to turn on the DVR cable box and then the tv and both seem to be on and then the tv turns off. I tried unplugging it for a bit but same thing happens. Also I tried turning it on the cable box and the tv itself and same thing.

I replaced the bulb a month or so ago and things were fine.

Any help?
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More about panasonic hdtv 1080i turning
  1. probably the power supply failing
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