Screen Question

[rpetrello]

I've been doing the small LED mod on a PSOne screen for a portable I'm working on and have a few questions. I've completed the mod and have plugged the screen into its AC power adaptor to test if the screen itself still works. Should I see anything? The unit is definitely getting power and sending 5v to the LED's, as the glue holding down the resistor I'm using has started to melt from the heat, and I've poked around with a multimeter checking voltages. I see nothing on the screen at all, however. Do I need some sort of video input (either from an actual PSOne, or the SNES?) for anything to display on the screen? I'd think with the LED's in there, it'd at least flicker or display a dark black for the empty screen. When I lean down close to the unit and listen, I hear a faint whistling noise. Maybe I've cracked the LCD? Any ideas would be greatly appreciated.

[daguuy]

i don't think you need a video input to see if it works. there's a thing in the screen faq that tells what to do if it powers on but no video
BTW this belongs in the screen section. anyway, back to the subject...

[Dave]

I have had that happen to me before, I recommend looking for an LED with the + and - leads touching, that could possibly heat the resistors. Also to test if your screen works just hit the volume or brightness buttons and it will show their level onscreen .