Trying to track down the -32V rail coming from the motherboard ribbon,: there is -32V until the transistor circled with red in the photo attached. Then nothing. I'm not an electronic engineer, but I think it's not normal. All the tracks marked in yellow have no voltage, and they end to pin 7, in …

Well I tried to tin some areas, desoldered and resoldered the 1 microFarad tantalum capacitor, resoldered the new capacitor, checked with ohmeter that no traces are in short with others. No difference so far. As for the voltages, I have found that pin 4 of the connector is giving +2 V . The …

Thanks again Thermalwrong, the connector from the inverter board to the LCD driver is a 15 pins molex one, it's just strange to me that the check holes are 14 as in my previous photo. It is difficult for me to check a voltage with the multimeter directly on the molex pins, they are so little that I …

Thank you Thermalwrong, I will try the scrap & tin technique as suggested. Thermalwrong wrote: Did you reseat that ribbon connector while the laptop was on or off? I ask because I made the mistake of running my Thinkpad 240 while I was messing with the backlight ribbon cable You are not alone !!! …

Hi, it's my first post here but I'm a long-time reader of this valuable forum... I'm in search of a bit of help, I hope a LCD tech guru can give me a hint. Here's the problem: I recently bought a COMPAQ Contura 3/25S whose screen suffered double-side vinegar syndrome. The screen showed the caracters …