Hi all, hope somebody can help. I bought a good looking Compaq LTE5250. Unfortunately, it seems there's a hardware issue... When the laptop starts, after the post/memory test you'll get the screen with the red compaq message. After that message nothing happens. It seems it freezes in the booting …

Thanks again for your kindness and detailed information!! The yellow and black wires are the low voltage DC power that runs the CCFL inverter, at probably 5v or 12v DC. That's what F1 is for, the high voltage part is the thin rectangular (highlighted as red oval) PCB stuck to the back of the monitor …

Yep, can confirm, have been zapped a few times by the CCFL output voltage. I think it's in the hundreds of volts range. Thanks for the extra pictures, so it's a 640x480 TFT and that adapter board looks like it's running the inverter as well. If it was me then it'd be the 40-pin was for the LCD data …

What's a weak signal, like noise on the screen? What you're describing could be a backlight fault just as much as it could be an LCD signal fault - if it was a grey or white screen then the LCD side could be at fault but if the screen is just black, the first place to look is the backlight. That'll …

It's good that you know the VGA graphics is working so the graphics card itself is working right. That PCB on the side of the LCD monitor, does it go into a connector on the back of the LCD? Perhaps thats been dislodged with all the removal/reinsertion of cables. Possibly remove the PCB and clean …

Anyone who can help? Or maybe suggestions what I can do? Thanks

Two weeks ago I bought a Dolch PAC 62. Everything seemed ok, except the display. When I turned it on, the display was readable, but with interference every few seconds. I thought that it could be the cables from the video card to the display. There are two cables in between: a 10-pin and a 40-pin …