Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 19-03-2008, 19:31   #1
Registered User

Join Date: Mar 2008
Posts: 1
12vdc HDTV

Where to find a 12volt HDTV? Or the most energy efficient HDTV 120v for inverted power.
__________________

__________________
solarboy is offline   Reply With Quote
Old 19-03-2008, 21:07   #2
Moderator Emeritus
 
Pblais's Avatar

Join Date: Mar 2003
Location: Hayes, VA
Boat: Gozzard 36
Posts: 8,700
Images: 15
Send a message via Skype™ to Pblais
LCD not Plasma for energy efficency. Smaller screens use less power. If you look at the 120 volt TV's you can read the watts consumed. Volts times Amps equals Watts. That will tell you DC amps required and the size of the inverter required.
__________________

__________________
Paul Blais
s/v Bright Eyes Gozzard 36
37 15.7 N 76 28.9 W
Pblais is offline   Reply With Quote
Old 19-03-2008, 22:47   #3
Senior Cruiser
 
senormechanico's Avatar

Cruisers Forum Supporter

Join Date: Aug 2003
Boat: Dragonfly 1000 trimaran
Posts: 5,827
Quote:
Originally Posted by Pblais View Post
LCD not Plasma for energy efficency. Smaller screens use less power. If you look at the 120 volt TV's you can read the watts consumed. Volts times Amps equals Watts. That will tell you DC amps required and the size of the inverter required.
And don't forget to add the bite taken by the inverter.

On the horizon:

Microvision: Accessory Pico Projector Displays
Microvision: Embedded Pico Projector Displays

BTW,
I own a pile of this stock.

Steve B.
__________________
senormechanico is online now   Reply With Quote
Old 19-03-2008, 23:46   #4
Registered User
 
Celestialsailor's Avatar

Join Date: Nov 2006
Location: In Mexico, working on the boat
Boat: Hallberg Rassy 35. and 14ft.Whitehall pulling skiff.
Posts: 8,013
Images: 5
In another thread somewhere around here, some people were stating that some LCD's were powered by a little 120AC to 12VDC wall adapter. So maybe an inverter is not needed.
__________________
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming: Wow - what a ride!"

http://wwwjolielle.blogspot.com/
Celestialsailor is offline   Reply With Quote
Old 20-03-2008, 03:45   #5
Registered User

Join Date: Dec 2007
Location: North Wisconsin
Boat: Liberty 28 Custom Cutter - "Native Dancer" For Sale
Posts: 209
Indeed. I checked out a cheap small screen at Best Buy and found a little transformer for the power. You just need to look at the power cord.
__________________
Liberty28 is offline   Reply With Quote
Old 20-03-2008, 07:18   #6
Provocateur & Raconteur
 
knottybuoyz's Avatar

Cruisers Forum Supporter

Join Date: Nov 2005
Location: Iroquois, Ontario
Boat: Bateau.com TW31 Modified
Posts: 3,583
Images: 87
15" AC/DC LCT TV on e-Bay. Item #300207978384 for just under $300
__________________
Yours Aye! Rick
~^~^~^^~^~^~^~^~^~^~^~~^~^~~^~^~^^~~^~^
"It's not the boat "you built" until you've sworn at it, bled on it, sweated over it, cried beside it and then threatened to haul the POS outside and burn it!"
knottybuoyz is offline   Reply With Quote
Old 20-03-2008, 07:58   #7
Moderator Emeritus
 
Pblais's Avatar

Join Date: Mar 2003
Location: Hayes, VA
Boat: Gozzard 36
Posts: 8,700
Images: 15
Send a message via Skype™ to Pblais
Quote:
some people were stating that some LCD's were powered by a little 120AC to 12VDC wall adapter. So maybe an inverter is not needed.
The small ones don't take a lot of power and so a wall adapter can work well. We run our 15 inch LCD off a 300 watt inverter and it only uses a fraction of that. I would not pay $300 for a TV that comes with a 12 volt adapter. A basic 300 watt inverter can be installed easily and then you have it for other small AC devices.
__________________
Paul Blais
s/v Bright Eyes Gozzard 36
37 15.7 N 76 28.9 W
Pblais is offline   Reply With Quote
Old 20-03-2008, 08:22   #8
Registered User

Join Date: Apr 2007
Location: Seabrook, TX
Boat: Westerly Corsair 36, The Mons
Posts: 97
We have a 19 inch 12v HDTV with DVD built in. It is manufactured by Magnavox. We got ours at Circuit City. It used an adapter to go from 120 to 12. So we spliced into the original plug to the tv so it can operate directly off of 12 v. It uses about 4.4 amps according to the Link 20.

The TV is somewhat sensitive to voltage fluctuations. Initially, even turning on the water pump would cause the screen to black out while you can still hear what's going on.

To address this problem, I purchased a voltage stabalizer from Ampor. This prevents the blackouts with the exception of starting the engine or the generator. When a blackout occurs, you just have to turn it off and then back on again.

Another option is the Skyworth TV/DVD sold by West Marine and Target. You can get the 19 inch model for a little over 400 off of the Target web site. I would have purchased one of these myself had they been available at the time. However, I don't know whether or not they are susceptible to the blackout issue.

If you get one of those, I would be curious as to how well they operate.
__________________
The Mons is offline   Reply With Quote
Old 20-03-2008, 10:43   #9
Registered User

Join Date: Jan 2005
Location: Seattle area (Bremerton)
Boat: C&C Landfall 39 center cockpit "Anahita"
Posts: 1,076
Images: 6
120V to 12 V adapters

The 120V to 12V converters accommodate a wide range of input voltage and frequency delivering a regulated 12V to the television. The television circuitry, therefore, may require a well regulated 12V (the actual value of which you do not know without measuring it) to operate properly. If the voltage goes too low the circuitry may "drop out" and require a turn-off and re-application of input voltage.

If the "12V" is too high, such as when charging batteries near 15V the input circuitry may overheat and be damaged. Because of this I agree with Paul in that it is safer and easier to merely use a low power inexpensive ubiquitously available power inverter to power the adapter and be done with it. No wire cutting or special "voltage stabilizers" are necessary.
__________________
"I don't think there'll be a return journey Mr. Frodo". Samwise Gamgee
Rick is offline   Reply With Quote
Old 20-03-2008, 11:03   #10
Senior Cruiser
 
Therapy's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: W Florida
Boat: The Jon boat still, plus a 2007 SeaCat.
Posts: 6,894
Images: 4
Quote:
Originally Posted by senormechanico View Post
And don't forget to add the bite taken by the inverter.

On the horizon:

Microvision: Accessory Pico Projector Displays
Microvision: Embedded Pico Projector Displays

BTW,
I own a pile of this stock.

Steve B.
I don't see it for sale.
What is the ticker symbol?
How is it doing?
Do you work with/for them.
__________________
Therapy is offline   Reply With Quote
Old 20-03-2008, 17:07   #11
Senior Cruiser
 
senormechanico's Avatar

Cruisers Forum Supporter

Join Date: Aug 2003
Boat: Dragonfly 1000 trimaran
Posts: 5,827
Quote:
Originally Posted by Therapy View Post
I don't see it for sale.
What is the ticker symbol?
How is it doing?
Do you work with/for them.
Nasdaq ticker MVIS
Let's just say, "You have to be patient, but it looks on the verge."
No.

Steve B.
__________________
senormechanico is online now   Reply With Quote
Old 07-01-2009, 17:07   #12
Registered User

Join Date: Apr 2007
Location: Seabrook, TX
Boat: Westerly Corsair 36, The Mons
Posts: 97
For archival purposes, I have put in the following post.

In my previous message on this thread, I reference the Skyworth 19 inch HDTV/DVD combo system. I have acquired two and returned two. They are also currently on back order from West Marine, Target, and Sam's Club. I would not be surprised if this was due to quality issues.

The first one had a damaged bezel around the screen. Apparently the TV was assembled improperly causing some component underneath the bezel to cause a bump. The unit had a fuzzy image that could not be corrected by any of the image settings.

The second unit also had a fuzzy image. In addition, the tv displayed images that were not centered vertically on the screen. There is no adjustment to move the image horizontally or vertically on the screen.

A design flaw of both units is also that it forgets any settings changes that you make when you turn off the tv.

What is good about the unit is that the 12volt system is very stable with our voltage stabilizer. We can start the engine or generator without the unit malfunctioning. Of course, if you cannot tolerate the poor image quality, this is of little value.

I would not recommend this unit for use at this time.
__________________
The Mons is offline   Reply With Quote
Old 07-01-2009, 17:45   #13
Senior Cruiser
 
Therapy's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: W Florida
Boat: The Jon boat still, plus a 2007 SeaCat.
Posts: 6,894
Images: 4
Thanks for the update.

HD should not be known for "fuzzy" images IMO.
__________________
Therapy is offline   Reply With Quote
Old 23-11-2009, 16:46   #14
cruiser

Join Date: Jul 2008
Posts: 6
Hey all,
12 volt hd tv's are the way to go. Picked one up a while back and it's still up and running. anytime I need something 12 volt I first check the source of my television; 12Volt-Travel

Something I didn't do, something I didn't know at the time. an extended warranty. Not that I've had any problems but looking into it now, I spent about $300 on a TV and for another $50 it would be fixed or replace for free for 2 years. Almost seems foolish not to take the deal.

Whatever you do, good luck and make sure to give them a shot they really know their stuff.

Joe D.
__________________
JoeDiamold is offline   Reply With Quote
Old 23-11-2009, 17:59   #15
Registered User

Join Date: Feb 2009
Posts: 1,848
Quote:
Originally Posted by The Mons View Post
For archival purposes, I have put in the following post.

In my previous message on this thread, I reference the Skyworth 19 inch HDTV/DVD combo system. I have acquired two and returned two. They are also currently on back order from West Marine, Target, and Sam's Club. I would not be surprised if this was due to quality issues.

The first one had a damaged bezel around the screen. Apparently the TV was assembled improperly causing some component underneath the bezel to cause a bump. The unit had a fuzzy image that could not be corrected by any of the image settings.

The second unit also had a fuzzy image. In addition, the tv displayed images that were not centered vertically on the screen. There is no adjustment to move the image horizontally or vertically on the screen.

A design flaw of both units is also that it forgets any settings changes that you make when you turn off the tv.

What is good about the unit is that the 12volt system is very stable with our voltage stabilizer. We can start the engine or generator without the unit malfunctioning. Of course, if you cannot tolerate the poor image quality, this is of little value.

I would not recommend this unit for use at this time.
I also bought and returned a skyworth due to no picture from an antenna purchased a naxa 15.5'', from bundle city, great picture and built in dvd uses less then 3 amps
__________________

__________________
motion30 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
Homemade HDTV Antenna klaven66 Marine Electronics 16 23-01-2010 11:38
HDTV TV and/or antennas for boat mobetah Marine Electronics 10 19-01-2008 10:35



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 14:11.


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.