New guy to forum here so just shoot me - or better yet, redirect me if this has been covered. I've got a 6 mo old 12v Jensen 32" tv installed in my RV (2006 Thor class c). I used the old TV 12v line that was up in the cabover for power but the original TV was 120v. Here's the issue: when I'm on shore power the TV works fine. However, when I go only on battery power the TV will run about 2-4 minutes and then shuts down. I've tried two different coach batteries - both fully charged - so not a battery issue. I do have the stereo and the winegard sensarpro also on the 12v power line in the cabover. 12v power line in cabover is about 14 or 16 gauge. BTW, stereo works just fine when on battery power. My thoughts: I've heard the Jensen TVs can be voltage/power sensitive so ... While I measure 12v at the TV plug maybe (???) I'm getting a voltage drop when loaded with the TV on the relatively small 12v line that runs to the cabover that's just enough to not support the TV when on battery but with the boost of the converter it works. BTW, measured 12v at plug with both battery and then converter on. Note: my voltmeter is meant for higher voltages so no tenths. I'm going to try a direct connect to a battery (when the temps here in STL rise above 15!!) and see if the TV will work when I bypass the long wiring run from 12v panel in back of RV to front. Anyone run into an issue like this with a Jensen TV? BTW, I'm dreading snaking a heavier 12v line from back of RV to cabover!!