Two will certainly be ground and power, but the others may not be simple ON/OFF type signals, but more likely some kind of pulsed data coming back from the inverter (if there's a return), an analogue input for brightness, and possibly a logic signal for ON/OFF.
In any case can I just wire the backlight panel to a transformer?
Should I test it? Just got to figure which is which. Is there a way to discover that by where the wires connect in the board? I could take a close picture of the board.
Ground is obvious, so that's easily identified - power is as well, it will go the +ve end of the large electrolytic(s) on the board. The other connections are somewhat more difficult.
Backlights of a 42 inch lcd screen how to power them
I have a LG Philips LC420Wu6 from 42 inch tv. I removed cracked front LCD panel and used the whole tv for shoplight over workbench for awhile then got replacement and fixed the tv, now I have the old LC420WU6 with backlights and inverters, 2 wires from each inverter. What can i use to power the inverters?
It worked great for work light.