20 Most Recent Sceptre X9G-NagaIV 19" LCD Monitor Questions & Answers

The on/off switch is defective. Just plug the monitor into a power strip and turn it off with the switch on the power strip.

See my tip here: http://www.fixya.com/support/r9424404-fix_osd_lockout_or_screen_display

pop the back off of it and remove the power board, (it's the one that looks more primitive) look at the solder points on the back of the board for any burns or bubbles....

if not then you need to order a new power suply

Sounds like a bad monitor, but just to be sure, hook a spare monitor to the computer, if okay! The Sceptre Monitor is the issue, the cause is the main board on the back of the display panel processes in coming video signals to correctly display the content, to repair would not justify the cost, cheaper to replace. Now if both screens show the same problem, it will be the video graphics card in the computer.

I think they are MOVs in the primary AC side. Can you post the pictures, or send them to me at [email protected]. Most MOV are blue in color, ceramic cap is usually orange/yelllowish color.

Look for bad caps with elaking/bulging tops as shown here (it is similar to the X7G which is 17" model).

If you are going to DIY and have proper tools and know safety precaution then please read on: Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, 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 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.

Basic LCD monitor troubleshooting guide: http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

http://en.wikipedia.org/wiki/Capacitor_plague Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Not an expert, but from what Ive read, this is a cfl inverter issue. I had the same problem on my Sceptre. Good luck finding parts. My solution: get another monitor.

You remove all the screws and the stand, then use a thin flat blade screw driver to crack open the case starting at the bottom edge of the monitor first and work your way around, it is kind of hard to explain in words, just be real careful on the switch assembly in the front bezel.
You can also look a YOUTUBE on how to disassemble LCD monitors.

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Please post back what you find.

If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses; poor solder joints, 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 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
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you

plug back to vga and setup multy screan c

What about the fuse? Sometimes there is a fuse on the circuit board.

The lamps are integrated inside the LCD panel. What kind of problem are you haveing with the monitors? see some pictures here: http://s807.photobucket.com/home/budm/allalbums

This could be as simple as the video cable isn't connecting securely. You could try replacing the cable or screwing it tighter. We recently had a red tint on an external monitor for a laptop because the cable was loose; since the laptop moved regularly, screwing the connector to the port on the machine wasn't a convenient solution. The other reasons for an odd tint like that is the video card or the monitor starting to fail. Attaching the monitor to a different computer and seeing if the problem repeats will check if it is the monitor and not the video of the computer.

I hope this helps.

Cindy Wells

I would suspect the capacitors on the power supply board. Other sites show that power up problems are due to the aluminum electrolytic capacitors on the power supply board being defective. Replacing the four 470uf 25v capacitors (470 micro farad, 25 volt) on the board usually fixes the problem. Sometimes also the two 1200uf 25v capacitors could be the culprit. I suggest changing them all. The price is about $7 for the parts online at Mouser electronics plus $7 shipping. I just fixed mine. I bought two 1200uf 35v capacitors, Mouser part number: 647-UPJ1V122MHD6 and four 470uf 25v capacitors Mouser part number: 661-EKY250ELL471MH2 These are slightly larger than the originals but still fit and they were in stock. You will then have to open the unit (relatively easy) remove the power supply board by removing four screws and disconnecting the connectors (Make a note of wire colors and where the connectors came from before removing). Then you will need to remove the old parts by desoldering them and then solder in the new parts (somewhat easy if you have soldered before)

Took it apart, all the way down to the boards and first examined the capacitors on the power board. It turns out it was a cracked metallized polyester film cap (C10), not a blown electrolytic capacitor. Ordered a new one and some transitors from DigiKey. Dont know if that is the complete fix, but the cracked cap certainly isnt supposed to be there.