Redundant as it may sound, check the connections at both the outlet, and at the point where the cord plugs into the TV. Also, if you're using a breaker strip, check to see that you didn't pop the breaker.
Outside of that, try unplugging it for an hour and then plugging it back in. If there's no movement, it may be a power supply issue, but at that point, I'd recommend having a technician inspect your unit.
I'm experiencing huge issues with my TV. I hooked up my PlayStation 3 to it and was messing around with the HDMI cable. More specifically, the console was hooked up to the TV with ordinary composite cables and at the same time I plugged in the HDMI cable in the TV, but not yet in the console. Then I started moving the TV set and suddenly it just shut itself off. Not just turned off, but shut off as though it wasn't plugged in to the power outlet.
I tried plugging it in and out, as well as pressing the power on/off button on the TV set, but to no avail. I do not know what else I can do.
The reason I described the cable setup in such depth earlier was because I thought it might have blown a fuse. I was stupid enough to leave the TV on while messing with the cables, so this is the outcome I'm most scared of. It could have also been caused by overheating, as the TV had been working for a rather long time before the incident.
Has anybody ever experienced similar problems? Can anyone take an educated guess at what the issue here is and how to solve it?
Thanks in advance.