LCD TV backlight, theory of operation - AVS Forum | Home Theater Discussions And Reviews
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Old 10-05-2006, 03:09 PM - Thread Starter
tom42's Avatar
Join Date: Sep 2006
Location: Germany
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Hello group,

I recently bought a Toshiba 37WL66 LCD TV here in Germany. (I understand this one is most similar to the US HL95 model.) The backlight is somewhat brighter on the right third of the screen. Out of curiousity I opened the set to look if I can fix this myself. It appears that there are 10 separate inverters powering 10 flourecent tubes.

Does anyone has access to the service manual for a recent LCD TV and can check wether there is a calibration procedure to set individual brightness on the tubes - or are they supposed to be perfectly balanced with no option for calibration ?

Also what are tolerable deviations for backlight intensity ?

Thanks and Regards

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