Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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cmdrdata
 
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Default LCD inverter repair

I have several LCD inverter for IBM Thinkpad 600 series laptop that bit
the dust. Symptoms: the screen would light up for a few seconds after
power up and then it goes dark. Sometimes I can hear a faint chirp from
the inverter as it starts up, but then all goes quiet. I have repaired
my laptop a few times using parts from eBay. The question is, what is
typically gone wrong in these small boards? Is it a cap going bad or
the small transformer that generates the voltage to light up the back
light? This item are going for about 10-20 bucks on ebay (pulled part).
I would like to repair these cards myself if possible (have done work
on flat packs in the past, in my younger days.. hehehe ).

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