Question about Sceptre NAGA II X20WG 20 inch LCD Monitor

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20inch monitor only has video for fraction of a second. then goes out. does this every minute or so. i used vga instead of dvi, same. i used mobo instead of video card, same. picture comes to second screen ( 32inch sceptre tv) with no problem. blue lite comes on instead of red letters on case, but no pic.

Posted by bartkatra on

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Bud Martin

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It may have power supply problem due to bad DC filter caps, bad backlights inverter circuits, and worst case will be the lamp assemblies.
You need to open it up and check the caps in the power supply section first.
Example: http://s807.photobucket.com/albums/yy352/budm/SCEPTRE/Sceptre%20X7G/

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

Posted on Aug 13, 2011

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