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Old 05-29-2015, 11:30 AM   #1
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12v power to TV

Our 2005 Classic 31 has factory-installed TV with the CD and DVD players in the forward cabinet above the gaucho. While vacuuming the dust and schmutz out of the fridge cabinet, I noticed that the TV was powered by a 120-12v wall wart in the cabinet. Is there any way to get rid of the adapter and just power the TV from the 12v system of the trailer? This way, we could watch the tube while not connected to shore power. I realize it could be a pretty hefty draw, but we don't spend that much time watching TV.
BTW, the CD and DVD players are already 12v-powered.
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Old 05-29-2015, 12:13 PM   #2
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Easy, remove the converter and attach a 12 volt plug. My 22 inch came with both a 120 and a 12 cord.
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Old 05-29-2015, 12:44 PM   #3
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12v power to TV

Is polarity an issue?
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Old 05-29-2015, 01:02 PM   #4
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Yes, polarity is important, but easy to figure out.
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Old 05-29-2015, 01:06 PM   #5
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Is it time to break out the multimeter?
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Old 05-29-2015, 02:21 PM   #6
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Typically, a 12 volt plug and outlet have +12 volts on the center conductor, and ground/return is the outside conductor. The power supply should show how the 12 volt plug is wired, and the TV might show how the input is wired.

You can check the output of the power supply with your multi-meter to verify.
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Old 05-30-2015, 07:56 PM   #7
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I installed a 12 volt tv and blu-ray player in my sob and found that when plugged in to shore power or on the generator, the dc voltage went as high as 14 volts and wasn't "clean". So although it worked great when on battery only, it wasn't watchable when 110 volts were present. Plus it kept blowing fuses.

So I got a 12 volt dc regulator and wired it inline. Now I have a clean 12.3 volts dc no matter what and the tv takes so little power we never run down the batteries.

Just something to consider...
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