I bought this screen like 3 years ago and I tried the LED MOD.
I cut the top transformer and plugged in 3 LED's. At the time I couldn't get the screen to work, but today I decided to go back and is working!
Well, somewhat.
I'm using 5V to light them up, and I'm using a 30ohm resistor on each.
This is my setup
At the end of each LED I got a 30ohm resistor.
Here is a diagram.

Now my problem is that my top right LED is at full brightness while the other 2 are really dim. I can barely see anything on the screen. Whats wrong?
After the first resistor, the current drops to 2.8 - 3 V, which is fine.
Thanks!