Television and Home Theater

We have this TV installed in custom cabinet in our motorhome.  We can remove it, but would like to know if we should start shopping for a new one or anticipate repair before we remove the TV, or should we have our motorhome electric circuit checked.

Hi guys, Im in quite the panic at the moment, My 50" Mitsubishi thats been going strong with me for 15 years has halted operations. I know most people would tell me huck it and join the DLP HDTV revolution but call me old fashioned, I love this wood framed behemoth. I was watching it today and it shut off on me, I thought i had pressed the power button so I turned over the remote to power it back on. I observed the tv power on, but the screen was red with a faint picture in the background.

I've had my Panasoni PT-47WX53G unplugged for around two months or so. Someone came by today to buy it and I plugged it in and hit power and I heard a beeping that fadded away. No picture. No sound. Just the red LED on he front blinking 5 times.

It's worked perfectly up until the time I had unplugged it an rolled it into the spare room ten-fifteen feet away.

Any ideas on what this might be?

Point of interest, the spare room is quite cold, likely around 50 degrees or so.