My Gateway M6750 notebook monitor will not light up(it's dark). I hooked up an external monitor and that works fine. How can I tell if this is a back light issue or an inverter issue?
The fault could be a faulty inverter or a faulty CCFL lamp.
The inverter supplies high voltage to the CCFL lamp anf the CCFL lamp is a tint fluro lamp and it dims with age or fails like any fluro lamp.
You could test the voltage output of the inverter with a multi-meter or just replace it cost about $40 and the CCFL lamp cost about $10. Check out LCD Parts for service, parts, and DIY info Use this link to their WEB site :- www.lcdparts.net
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