Question about Sceptre X20G-Naga II 20.1" Flat Panel LCD Monitor

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Sceptre X20G Naga II 20.1" Widescreen monitor

The display driver board in the monitor is failing, according to Sceptre! The monitor stays on for a couple of minutes and then the screen goes completely black. No light around the edges at all. The Blue Light remains on, and I have to turn the monitor off and on several times before it will finally stay on all day!
The part costs $100, but Sceptre will repair it for a flat fee of $75 if I bring it in!

I'm thinking bad component like a capacitor or something equally as simple! I work on more complex electronics than that so I have the technical ability to repair it, but have no idea where to start looking.

Anyone have this kind of problem?

Thanking you in Advance,
theonejrs

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  • mike709 Oct 30, 2008

    I have the same problem, I replaced the CAPS but it didn't solve it.

    If I knew what was causing it I could fix it.



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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.

Posted on May 29, 2009

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