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jango2 jango2 is offline
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Default TFT backlight shuts off after 2 seconds..

I just fixed a similar problem in a Sony KLV-L32M1. The service manual
did'nt have a schematic of the invertor section, so i pulled up
datasheets of the driver ICs and the main controller. The main
controller had a selectable option of reporting CCFL and peripheral
circuitry failure by either turning off all CCFLs together, or (by
removing a ) ohm to ground jumper on 1 of its pin thereby lifting the
pin high) running it in IND (individual) mode where only the faulty
drive circuit and CCFL would be turned off. Hence the tv would now
switch on with all lamps glowing while the defective one would fire
and then quit. Replacing the faulty lamp (which mind you seemed to be
fine, it glowed if forced, slight blackening at one end observed)
solved the problem. Returned the ic to group mode by re-installing the
grounding jumper.