Yes, I have when 12v camping. The heater will do the same thing, also. If the battery drops below a pre determined voltage, in order to preserve battery life, the TV will cut off after a few seconds. I installed a second battery in the tongue area, to be able to watch TV longer. One cold night in particular, because the heater (big power hog) does the same thing, I had to hook the truck back up to the camper, and run the engine to produce enough juice for the battery to operate the blower. I would suspect the battery. Check the water in the cells, and be sure to charge it up fully. Hope this helps! (you can test this theory by either hooking up charge to the 12v tongue plug, or trying a known good battery and try the TV) Randy
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/SIGPIC]'08 V-lite Flagstaff 30WRLS
'06 Ram 1500 QC hemi Reese dual cam sway control,
K&N series 77 intake, Hellwig helper spgs. LT tires,
Flowmaster "true duals", 380 h.p., Bilstein shocks
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