Sceptre monitor blackscreen x20g naga II not sure if screen and backlighting or if just the backlighting need help

It looks like the button on the far right on the front panel is the power button (highlighted in picture below).

(Original picture from http://www.sceptre.com/)

You need Composite video to VGA adapter box.
http://www.amazon.com/VGA-Monitor-Input-Convertor-Selector/dp/B000JCLLUW

http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

Power supply will be the first place to look, make usre that it does put out 5vdc for logic and 12~18vdc for the backlight inverter circuits.
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses, poor solder jopints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed SCEPTRE monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

Do the caps look OK at least with no leaking/bulging tops. Do you have +5vdc for the logic bd and 12~18vdc for the backlight inverter circuits, those are the first to check. You need to have +5vdc for the set to turn on.
http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

if you have the warranty, return it and get a new one free. ok

reset all device to factory defaults then try.

I am working on one of these for a customer. Found leaky cap on 5 volt power supply. replaced it, still no backlight. Looked at the inverter with an o-scope and it runs for a few seconds then shuts off. I hooked a ccfl across each of the transformer secondaries on the inverter and it lit up! I believe the problem is failed ccfl units. There is plenty of voltage there to light them up, I have an rf burn on my thumb to show for it. I have not looked at the ease of dis-assembly of the display to replace the backlights. It does not look easy.

FIXED!
Device : Spectra X20WG-Naga
Problem : monitor comes on then flickers then goes off
solution: Replace Capacitor C101 (150uf, 35V) and Fets U101 and U102 (4511GM)
Comments: This is a common problem with this monitor.


I’m happy to help further over the phone at https://www.6ya.com/expert/paul_0af9b1d5c0eb4fc3

most common lcd monitor break down, check all electrolytic capacitors for leakage and loose board solder specially on the ccfl inverter section.

My 22" Scepter Monitor wont light-up, pulsating blue light on. I posted this SOS a feww hours ago but I couildn't sign into FaceBook. Please anyone with a solution would be tremendously appreciated.

Best regards,

Oscar