I turn on my samsung syncmaster710 and it just has a black screen, with a faint (very faint box floating around it. is this a fualty backlight?

Sounds like your backlights are bad, can you see a faint picture with the flashlight test

I would guess its a backlight issue but not sure why it started as a sound problem

Hi Doug,
Please try a flash light on the screen. If you can see a faint picture, the fault is with the backlights. In samsung LCD TVs it is the bad inverter board which is often found responsible for this fault.
Good Luck.

dim the lights in the room, turn on the set, and shine a bright flash light on the screen. Do you see a faint picture? Also be advised that there are a lot of bad parts floating around on EBay. No backlight condition could be cause by a bad main board, power supply, inverter board, high voltage short on the inverter output, or a bad backlight bulb.

Might be a case of the backlight giving up. If this is the case, you have two options, replace the backlight (expensive and pretty difficult to do a good job of) or replace the whole thing. I'd go with the second option, as LCD monitors are pretty cheap at the moment! Stick with Samsung SyncMasters though, they do good price monitors that are reasonably reliable too. Either that or a Dell monitor.

Thanks
Moza805

When you can see a faint image on the screen and the display is black, the the problem is a backlight problem. This can be caused by a faulty inverter board or a faulty CCFL lamp.
For replacement parts please check out these WEB sites :-

LCD screens and Inverters
www.lcdparts.net http://www.yallstore.com http://www.shope2.com/

http://www.invertercentral.com/qrySearch.asp?Adword=1500&search=1500&Campaign=Google-Models-NA&gclid=CO3lg7HJlKMCFQcbewodZB2qoQ

http://www.nylaptopparts.com/

http://www.ccflwarehouse.com/

If you can see the screen image very faintly, the backlight system has shut down. This can be due to a component failure (driver transistor, transformer, or ccfl tube) or action by the backlight controller. Without disassembly and more information (test results) from within it is not possible to diagnose further.

More often then not, this is attributed to a failing Backlight Inverter. A Backlight Inverter, is a power board mounted below the screen that actually send power to the Lamp inside the LCD itself. Check to see, when it goes out if there isn't still some images faint in the screen. If this is the case take it to a local repair shop and have them order one and replace it. repair cost for this shuold be around 65-100 dollars.

If this helps, please rate my solution. Have a great day.

Sounds like the backlight for the LCD is dead, either the light itself or the power inverter. If you're not a tech, you should take it in for repair. If you are a tech, you can usually find replacement lamps and inverters on EBay. Hope this helps.

-kinerf

before you give up..call samsung directly, they are very consumer oriented and if it is only a couple months out of warranty you might get them to repair it,, 1 800 samsung