Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 07-10-2014, 10:49   #1
Registered User

Join Date: May 2010
Location: Grenada
Boat: Gulfstar Sail Master 47
Posts: 41
12 volt TV / low amp draw tv

I'm tired of running inverter and using 10 times the power to watch tv. Has anyone got any advice/ knowledge on 12v tvs. Currently I am in Grenada.
__________________

__________________
ASIMPLELIFE is offline   Reply With Quote
Old 07-10-2014, 10:54   #2
Registered User
 
SVTatia's Avatar

Join Date: Jul 2007
Location: Toronto, Canada
Boat: Luders 33 - hull 23
Posts: 815
Re: 12 volt TV / low amp draw tv

Quote:
Originally Posted by ASIMPLELIFE View Post
I'm tired of running inverter and using 10 times the power to watch tv. Has anyone got any advice/ knowledge on 12v tvs. Currently I am in Grenada.
Sorry but I could not resist... Asimplelife?
__________________

__________________
SVTatia is online now   Reply With Quote
Old 07-10-2014, 10:56   #3
Registered User
 
Stu Jackson's Avatar

Join Date: Jan 2011
Location: Cowichan Bay, BC (Maple Bay Marina)
Posts: 6,385
Re: 12 volt TV / low amp draw tv

12 Volt TV DVD Skyworth/NAXA/RCA LED 12V Color Television

Just an example. Google is your friend. I know you're in Grenada, but don't know what's "on island." Only YOU do.

Good luck.
__________________
Stu Jackson
Catalina 34 #224 (1986) C34IA Secretary
Cowichan Bay, BC, (Maple Bay Marina) SR/FK, M25, Rocna 10 (22#) (NZ model)
Stu Jackson is online now   Reply With Quote
Old 07-10-2014, 11:01   #4
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 17,031
Re: 12 volt TV / low amp draw tv

Quote:
Originally Posted by ASIMPLELIFE View Post
I'm tired of running inverter and using 10 times the power to watch tv. Has anyone got any advice/ knowledge on 12v tvs. Currently I am in Grenada.
10 times the power? maybe what 1.2 times the power or something?
Some 120V TV's may be 12VDC, if they have an external power supply, look on the power supply to find out.
__________________
a64pilot is online now   Reply With Quote
Old 07-10-2014, 11:20   #5
Registered User
 
UNCIVILIZED's Avatar

Join Date: Jun 2014
Location: Up the mast, looking for clean wind.
Boat: Currently Shopping, & Heavily in LUST!
Posts: 5,629
Re: 12 volt TV / low amp draw tv

It's been a while, but I had a TV which was both 12V DC, & 120V AC, and it was miserly. When I was living on the hook, I had 1 OLD solar panel which was all of 2.5 square feet. And I could watch 2hrs of TV every day, play the radio, & read as much as I liked, even in the winter time. And not flatten my batteries.
__________________

The Uncommon Thing, The Hard Thing, The Important Thing (in Life): Making Promises to Yourself, And Keeping Them.
UNCIVILIZED is offline   Reply With Quote
Old 07-10-2014, 12:10   #6
Senior Cruiser
 
colemj's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,049
Images: 12
Re: 12 volt TV / low amp draw tv

Just get one of the small pocket inverters to run the TV. The conversion loss on those are miniscule. Even your large inverter is not using 10x the power to run the TV vs. 12V.

If your TV is a power hog on the inverter, then it is just a power hog overall. Newer TV's can be much more power efficient - our old 20" flat screen uses 6A, while our new one uses 1.5A. But if you are looking for a large TV, it will still use quiet a bit of power.

Mark
__________________
www.svreach.com

You do not need a parachute to skydive. You only need a parachute to skydive twice.
colemj is offline   Reply With Quote
Old 07-10-2014, 12:47   #7
Registered User

Join Date: Feb 2014
Location: Deltaville, VA
Boat: Moody M46 46
Posts: 263
Re: 12 volt TV / low amp draw tv

I just finished pulling wire for 12V TVs in the fwd cabin, the salon and the aft cabin. The TVs were "made in china" jobs purchased from E-Bay or Amazon. Prices OK. Besides truly miserly power consumption, each has a built-in DVD player which cuts down on wiring and circuits needed to run separate DVD players. The price for the TV with DVD player was very close to the price without the DVD player, so why not?

We're not talking home entertainment center and surround sound quality, but the TVs (which are LCDs) are really flat and provide decent pictures and sound quality. The one in the salon is mounted on an arm that can be swung out to allow some adjustment for people sitting to one side. I just drilled holes into the arm and bracket so I can drop a pin in to immobilize the arm while under way. The ones in the staterooms are on fixed mounts, but the picture is fine.
__________________
Moody46CC is offline   Reply With Quote
Old 07-10-2014, 14:03   #8
Registered User
 
Island Time O25's Avatar

Join Date: Sep 2014
Posts: 2,017
Re: 12 volt TV / low amp draw tv

Your best bet will be googling used for sale LCD TVs in 20" range (give or take). I picked one up, by Sharp, at the local second hand place for $10. Its own converter goes from 120V to 12v on the nose, drawing 2.5 amps. I just connected it to a 12v socket with a fuse and that was it. Now if I can find a digital converter which works at 12v....

PS This change to digital from analog signal is not too conducive to TV watching on the boat as the signal strength in our area is very spotty and I tried all kinds of antennas to no avail. So we just get some old DVDs or watch programs on our notebook where there is decent wi-fi.
__________________
Island Time O25 is offline   Reply With Quote
Old 07-10-2014, 14:14   #9
Registered User
 
sy_gilana's Avatar

Join Date: Jan 2005
Location: On board
Boat: Van de Stadt 50'
Posts: 1,101
Send a message via Skype™ to sy_gilana
Re: 12 volt TV / low amp draw tv

We purchased 2 tv's, one 17" 12v and the other is a 22" and it was 220v but had the brick power converter on the power lead. We put it direct into 12v and it did not like it. It required 12.0 v. we were anywhere from 11.8 to 14.0 so I used a simple voltage regulator in a TO6 package, 2A, and now its happy. 1080p HDTV digital and analog, for less than 2 amps draw, and you can plug a USB memory stick in it or a hard drive and watch movies directly. Only thing is it had crap sound, all the flat panel TV's do, they cannot have big sound out of such a small volume. So we bought one of those Logitek computer speaker setups with a subwoofer and satellites. Now its really nice.

The new OLED screens are very light on power consumption...

So yes, do it direct if you can, but don't specifically look for 12v TV's they are more expensive, just look to see if there is a brick on the power lead, and then look what the output voltage of the brick is.
__________________
Tight sheets to ya.
http://gilana.org
sy_gilana is offline   Reply With Quote
Old 07-10-2014, 14:40   #10
cruiser

Join Date: Feb 2008
Location: North Charleston, SC
Boat: Camano Troll
Posts: 4,669
Re: 12 volt TV / low amp draw tv

Quote:
Originally Posted by a64pilot View Post
10 times the power? maybe what 1.2 times the power or something?
Some 120V TV's may be 12VDC, if they have an external power supply, look on the power supply to find out.
Maybe he has a tube type TV.

I have a Skyworth brand 12 volt TV/DVD. Check Internet vendors.
__________________
rwidman is offline   Reply With Quote
Old 07-10-2014, 15:50   #11
Marine Service Provider
 
AnchorageGuy's Avatar

Join Date: Mar 2003
Location: Wherever the boat is!
Boat: Marine Trader 34DC
Posts: 4,618
Re: 12 volt TV / low amp draw tv

Most of these 12 volt TV's need 12 volts. Not 11.8, 12.4 or 14.2. So it isn't a matter of wiring them into the boat system and forgetting about it. There are some exception but you need to know if the one your buying will work with variable voltage. The DC to DC converter will solve that problem but it will need to be connected to your boats DC system and then the TV connected to that. Chuck
__________________
Chesapeake Bay, ICW Hampton Roads To Key West, The Gulf Coast, The Bahamas

The Trawler Beach House
Voyages Of Sea Trek
AnchorageGuy is offline   Reply With Quote
Old 07-10-2014, 17:38   #12
Registered User
 
capt-couillon's Avatar

Join Date: Mar 2013
Location: Onboard (Boot Key Harbor)
Boat: Cornado 25
Posts: 494
Re: 12 volt TV / low amp draw tv

__________________
"It seemed like a good idea at the time"
capt-couillon is offline   Reply With Quote
Old 07-10-2014, 17:53   #13
cruiser

Join Date: Feb 2008
Location: North Charleston, SC
Boat: Camano Troll
Posts: 4,669
Re: 12 volt TV / low amp draw tv

Quote:
Originally Posted by AnchorageGuy View Post
Most of these 12 volt TV's need 12 volts. Not 11.8, 12.4 or 14.2. So it isn't a matter of wiring them into the boat system and forgetting about it. There are some exception but you need to know if the one your buying will work with variable voltage. The DC to DC converter will solve that problem but it will need to be connected to your boats DC system and then the TV connected to that. Chuck
If you buy a TV that's designed to run off a car or boat 12 volt electrical system, the regulation is built in. There's no need for extra parts.

I wouldn't recommend buying a household TV and cutting off the power block. t's not the same.
__________________
rwidman is offline   Reply With Quote
Old 08-10-2014, 01:04   #14
Registered User
 
UNCIVILIZED's Avatar

Join Date: Jun 2014
Location: Up the mast, looking for clean wind.
Boat: Currently Shopping, & Heavily in LUST!
Posts: 5,629
Re: 12 volt TV / low amp draw tv

If you're just looking to watch movies, there's the KISS option. Get a laptop with a BIG screen. No, it won't be big like a home entertainment system, but how far away from a screen can one really get on a boat.

Also, given that there are options to connect computers to TVs nowadays, I imagine that it's possible to hook up TV type feed to a laptop. Be it via an antenna with the proper convertor, or cable with an adapter.

Or... you can always go old school - Books & Newspapers ;-)
__________________

The Uncommon Thing, The Hard Thing, The Important Thing (in Life): Making Promises to Yourself, And Keeping Them.
UNCIVILIZED is offline   Reply With Quote
Old 08-10-2014, 09:46   #15
Registered User

Join Date: Jun 2009
Posts: 2
Re: 12 volt TV / low amp draw tv

Some good solutions here. I don't watch television, only movies, podcasts and documentaries. My solution is to use iTunes and put anything I want to watch on an iPad, about the size of a small TV. I also use a Bose battery powered speaker that I charge during the day from solar panels using otherwise wasted solar power to charge the speaker battery and use it at night to watch whatever I have synced to the iPad from my MacBook, also done during the day. The Bose is like a theatre sound and the iPad is large enough for the boat and I don't need extra power as we do not have shore power, just solar. The iPad is plugged into a usb charger and doesn't take much power. I think an iPad air would also work well, but haven't taken that leap yet. You can also charge the speaker battery on a small inverter.
__________________

__________________
loumar@gmail.co is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Using a 24 volt genset in a 12 volt system flopster Electrical: Batteries, Generators & Solar 2 21-05-2012 19:50
direct-charging a six volt bank from a 12 volt charger Jonathan Reiter Electrical: Batteries, Generators & Solar 19 14-12-2011 07:24
6 volt vs 12 volt? mestrezat Electrical: Batteries, Generators & Solar 39 18-02-2009 00:33
Anyone using a low power draw laptop? Christian Van H Navigation 23 17-12-2008 10:32
Wiring a 24 volt windlass on a 12 volt boat Paul Lefebvre Electrical: Batteries, Generators & Solar 5 01-12-2008 12:59



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 09:23.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.