Laptop/portable LCD backlight control circuit example, for troubleshooting assist. \ VOGONS

Laptop/portable LCD backlight control circuit example, for troubleshooting assist.

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First post, by BitWrangler

Posted on 2023-02-13, 03:59

BitWrangler Offline

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Joined: 2017-10-11, 00:55
Location: Ontario

Hi Vogons,

Been seeing several problems with old CCFL backlights been cropping up lately on 286, 386, 486 portables, and stumbled upon this which appears to be a Linear Technology application note as to how to use their chips in a system to control the CCFL backlight for an LCD panel. So I thought it would be good for study for assisting troubleshooting.

Application notes often get followed very closely, so if you have a Linear Tech chip in your machine, you might find this is highly similar to what is in your machine...

Unicorn herding operations are proceeding, but all the totes of hens teeth and barrels of rocking horse poop give them plenty of hiding spots.

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