Question about LG L1951S (Black) 19 in. Flat Panel LCD Monitor
I have seen tons of posts here about problems with the power supply board for LCD Monitors, but the symptoms of those posts aren't the same as this one. When I turn the monitor on, it flickers very dimly for about half a second, then turns off. The green power light turns orange. I am currently holding the inverter board in my hand right now, but nothing appears overtly wrong with it (blown capacitors, loose resistors, etc.) I was previously able to negate the effects of it by turning the brightness and contrast down to 0 when turning the monitor on, but now even that doesn't work.
Not all inverter problems will be visually apparent. Some capacitors fail with a high ESR and the only way to check that is with an ESR meter. Output transformers can fail subtly and you may have to test them with an ESR or low-ohms meter, but even that may not be definitive. Parts can be shorted or open without showing burns. It could also be a bad lamp / bulb.
Posted on Jan 22, 2007
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