12V LED TV options

Salvo wrote:
I'm not going to stoop down to your level. I'll have to remind myself to avoid your posts.

I've been a power electronics designer my entire life. My designs are in automobiles, military vehicles, space vehicles and aircraft. I understand electronics.

The biggest problem with installing a tv like Visio in a RV is the shock it is subjected to. The tv isn't designed for that.

As for over-voltaging the tv, the 12V input just powers voltage regulators within the tv. The regulators provide the power to critical circuits.

Gdetrailer wrote:


Sorry.. You lose.

Cable shows 2.28 Amps @ 12.4V with my clamp on Amp meter with TV and normal other stuff running, fridge turned off. It showed .68 amps with the inverter and TV turned off,normal parasitic electric stuff that runs all the time, CO meter, etc. Call it 1.6 Amps through the amp meter, power to inverter and TV. If I plug a Kill A Watt in there, it shows the brick pulling 19 to 21 watts at 120V. Or .166 Amps.

I don't know the accuracy of the Kill A Watt at such low amp draws, and if it is correct or not. Don't know the accuracy of the amp meter either when running 0 to 40 amps.

But as near as I can tell, not a lot of room for improvement, without the Inverter. 6w would be 1/2 an amp. Solar sunshine electrical power is free, to recharge, I already have the sunk fixed cost for that.

For now, I am happy.

I'm not going to stoop down to your level. I'll have to remind myself to avoid your posts.

I've been a power electronics designer my entire life. My designs are in automobiles, military vehicles, space vehicles and aircraft. I understand electronics.

The biggest problem with installing a tv like Visio in a RV is the shock it is subjected to. The tv isn't designed for that.

As for over-voltaging the tv, the 12V input just powers voltage regulators within the tv. The regulators provide the power to critical circuits.

Gdetrailer wrote:


Sorry.. You lose.

N-Trouble wrote:

NinerBikes wrote:
I just bought a Samsung 24" class 1080p TV last week. 20 to 21 watts, measured on the Kil-A-Watt, great picture, through a small 175w power inverter 12v to 120v. Then through the brick back to 14v. Picked it up at Costco for $169, had a $30 rebate, don't remember when the rebate ends.

Great TV, very very happy with the picture.

But will it work off of 12V is the real question? We all know it will work off of 110/120v

Yes, it will. I have a Samsung in my current RV. Running it direct off 12V. If you want to make your own 12v cable without cutting up the OEM cord, you might need a Philmore 265 plug for the TV end. You can google it. Not too many sources, but there are some. Also available as Enercell "T" plug from Radio Shack.
http://www.radioshack.com/enercell-adaptaplug-t/2730322.html

I don't believe it.

I get 27W and 50VA with a PF = 0.53 from the kill-a-watt when the Visio TV has a blue screen.

I get 1.5A direct power and 2.6A when using the brick/inverter combo to display a blue screen. That's a 73% improvement!

I get the feeling you're fabricating numbers. This isn't the campfire chit chat.

mena661 wrote:

Salvo wrote:
Instead of measuring watts, why don't you measure VA. :o

You'll be shocked!

VA was the same.

Hi Gde,

Then use a buck to control the voltage.

I'd love to see a link to an example, i've seen lots of thes threads and never heard of anyone burning up a tv.

If people can't get simple plarity right then no I guess they shouldn't attempt it

Salvo wrote:
What a bunch of doom and gloom! I guess you also have a 50/50 chance of wiring up your batteries correctly. Or is it even less than that if you got more than 2 cables to connect.

Those who are smart enough will use a voltmeter to polarity.

My Visio has a 12V brick. I've taken the battery to 16V with no problems to the tv.

Gdetrailer wrote:

"bypassing" the brick is not without potential pitfalls.

Insuring you have wired your cig plug to the TV CORRECTLY is one of the major hurdles that needs to be addressed properly.

You have a 50/50 chance of messing that up to start with and pretty much are voiding any hopes of the "warranty" covering your boo boo.

Sorry.. You lose.

Folks HAVE and DO hook their batteries up backwards.. Pretty much every spring there will be some threads posted right here on this very forum..

At least with the batteries the converter/power panel has a BUILT IN REVERSE POLARITY PROTECTION FUSE.

A TV which uses a brick power supply DOES NOT HAVE REVERSE POLARITY PROTECTION.

As far as YOUR TV being "OK" with 16V, you are "lucky", there HAVE been posts right here on this forum in which some folks were NOT SO LUCKY when they powered their converter.. The result is they bought ANOTHER TV on their own dime then used an inverter..

Just because YOURS "works" fine up to 16V does not necessarily mean ALL TVs will play nice at that voltage.

Do you "feel lucky"? Then roll the dice..

If you don't then play it safer by sucking it up and using an inverter.

Peoples "advice" here is free, but when someone uses YOUR advice and they damage something.. Are YOU "willing" to compensate them when something goes wrong after following YOUR "advice"? Good chance you would be nowhere to be found..

It is very easy to hide behind a keyboard and tell folks that all will be well with all TVs.. In the real world not all TVs will be fine and not all people will wire it correctly..

Salvo wrote:
Instead of measuring watts, why don't you measure VA. :o

You'll be shocked!

VA was the same. This was done years ago Salvo with my old rig. Numbers were to my satisfaction. Besides the TV is now in my office. The "new" rig came with TV's (that draw more power but I'm not replacing them).

I also have had no issues at all even with the converter in boost charge mode

What a bunch of doom and gloom! I guess you also have a 50/50 chance of wiring up your batteries correctly. Or is it even less than that if you got more than 2 cables to connect.

Those who are smart enough will use a voltmeter to polarity.

My Visio has a 12V brick. I've taken the battery to 16V with no problems to the tv.

Gdetrailer wrote:

"bypassing" the brick is not without potential pitfalls.

Insuring you have wired your cig plug to the TV CORRECTLY is one of the major hurdles that needs to be addressed properly.

You have a 50/50 chance of messing that up to start with and pretty much are voiding any hopes of the "warranty" covering your boo boo.