Step up dc to dc or inverter to power TV?

[dune16]

Currently on our boat we use a step up 12v dc to 19v dc device to power our LG tv. We may be about to change boats where we'll have a decent service bank and about 800w of solar, it also has a 2000w pure sine inverter. If I were to just get a regular mains TV for this boat will the inverter use excessive battery (standard 32" LG type tv) or will this not be that different from the step up thing I'm already using on the current boat? Only reason I'm considering the change is we'd want a slightly bigger TV than the current boat and these don't generally have 19V inputs so the step up won't work.

Thanks.

 

[vas]

if I'm right, many modern TVs have a brick power supply. If you get such one, you just tune your step up converter to accomodate it.
Having a 2k puresine inverter on has a 15-30W idle consumption (judging from my victron multiplus) Are you happy with that (or whatever your idle consumption is for the 2k)? if so, don't bother with the step up

V.

 

[dune16]

if I'm right, many modern TVs have a brick power supply. If you get such one, you just tune your step up converter to accomodate it.
Having a 2k puresine inverter on has a 15-30W idle consumption (judging from my victron multiplus) Are you happy with that (or whatever your idle consumption is for the 2k)? if so, don't bother with the step up

V.

Modern tvs up to about 28" do have a brick psu but it seems above that the psu is inside the TV so rules the step up out.

Having had zero experience of an inverter I was unaware of the idle usage. Not sure I'm sold on it although we should have about 800Ah service batteries....but 3 fridges! ?

 

[PaulRainbow]

I would use a DC-DC converter for the TV.

 

[LadyInBed]

Modern tvs up to about 28" do have a brick psu but it seems above that the psu is inside the TV so rules the step up out.

32" Traveller TV with Built-in DVD Player and Satellite Tuner - Cello Electronics (UK) Ltd

• 12-volt power adapter included

 

[lustyd]

Or...get a portable projector that you can also use in the cockpit to project onto a sail when the weather is nice. These have the very nice side effect of leaving the boat free of a tv when not in use. Obviously you need a way to hang a screen to project on, but that's easy enough. This runs on a USB-c cable or has enough battery for a film.
Capsule

 

[RupertW]

Currently on our boat we use a step up 12v dc to 19v dc device to power our LG tv. We may be about to change boats where we'll have a decent service bank and about 800w of solar, it also has a 2000w pure sine inverter. If I were to just get a regular mains TV for this boat will the inverter use excessive battery (standard 32" LG type tv) or will this not be that different from the step up thing I'm already using on the current boat? Only reason I'm considering the change is we'd want a slightly bigger TV than the current boat and these don't generally have 19V inputs so the step up won't work.

Thanks.

As a DC-DC converter is electrically DC-AC-DC and the inverter plugging in the TV is identical - DC-AC-DC, then it’s all about the efficiency of each component of your current arrangement compared to your planned one. A large inverter may have more standby power use but otherwise it’s just down to cost and the specs.

 

[dune16]

32" Traveller TV with Built-in DVD Player and Satellite Tuner - Cello Electronics (UK) Ltd

• 12-volt power adapter included

I tried a cello, awful quality when compared to an LG or Samsung

 

[William_H]

As a DC-DC converter is electrically DC-AC-DC and the inverter plugging in the TV is identical - DC-AC-DC, then it’s all about the efficiency of each component of your current arrangement compared to your planned one. A large inverter may have more standby power use but otherwise it’s just down to cost and the specs.

An inverter supplying 240v AC will have a DC to AC to DC converter the Dc then being switched to 240v AC. The TV if it runs on 19v but from 240VAC in, will have an AC to dc to Ac to DC converter to provide 19v internally. So efficiency wise a 12v to 19v step up (Dc to AC to DC ) would be more efficient.
But then if you buy a standard 240vac TV you don't get a choice. ol'will

 

[Graham376]

Our new 24" led TV doesn't have a brick, 240v only. At only 18w on eco setting, pretty frugal draw through 350w inverter.