LED lcd cable output voltages?

[HAz]

Anyone have a clue what the output voltage off each pin in a lcd cable are?

Just change a dc jack on a samsung r510 and the back light on the lcd isnt coming on now?

Not sure if it was working before but assume so. so annoyed!

 

[MikeHunt79]

I'm not familiar with the R510, I'm gonna take a stab im the dark and say 5v.

EDIT: Is this of any use?

They refer to an inverter, so it may be CCFL backlit as opposed to LED.

 

[HAz]

Thanks will check all voltages tomorrow, all I did was solder in a new jack plug, damn things.

 

[MikeHunt79]

I would just check the LCD connector is nice and snug, sometimes they need a little pressure for them to work.

I may be able to get some schematics if you need them, but they're not exactly easy to read.

 

[HAz]

yea i think its an inverter, just took screen out and its not LED its the old style cathod thing.

tested the cable voltages.

the inverter connector has 2 19v lines (constant) 1 3v (when on, 0v when laptop off) 1 0v (prob neg) and then 2 black 0v lines also prob negs.


and the inverter is giving out 0v's.

it did have a fuse on it which is ok but im pretty sure its dead.

 

[HAz]

when i keep the power lead in but turn the laptop off all vlotages stay the same apart from the 3v which goes to 0v which i assume is a switch live.