Is my inverter dead or lcd backlight?

[David97]

Hi everyone. I was trying to get a lcd pannel form a old laptop to work with a cheap ebay lcd controller. I had the original inverter and hooked it into the lcd controller. The inverter has 6 pins labled VCC, NC, ENA, CTL, GND NC.

When I hook it into the LCD controller I soldered VCC > 12V, GND > GND, ENA > BLON (though this means back light on?), CTL > Adj. When I power it up The back light on the lcd flicks once and then goes dead. I took a multimeter and probed it and got 12V on the supply to the inverter, 5v on ENA and nothing on CTL. I think this is normal as from what I've read the ctl pin is 0V at the highest brightness and 3.3V at the lowest.

I took apart another monitor I had and tried to see weather I could get the back light to work using the inverter from the working screen.I could not get the light to work, it didn't even want to flick once.

So is it safe to say that the light is dead? Or could the inverter i tested the lcd with not be matched to the bulb?

Thanks.