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I notice it's .71 on known good (w/out). Will interrogate those circuits. But suggestions would be welcome! aprendiz

.578 on both with pad plugged in 1.389 on both with pad out

I am writing this because my last post would not let me edit/remove/change headline. I have decided that my screen was just bad, and it was by chance that it burnt out as I was checking it out... works on a known good... fair enough. My problem is the Track Pad does not work, Have plugged in a...

well, like 140mv I did have to jumper around U7400 some burnt traces but they werent a big deal, just to their respective components.

pins read 3.3ea

At L7430 I have 0 volts... Probed around and am having trouble figuring out where in circuit the problem lies. Voltage drop is .15... not sure if this is low.

it was liquid damaged. I found a number of missing power rails, and was able to repair them. It was also US cleaned.

I realize what the three beep of death means typically, have also tried resetting everything... Has anyone found other causes of this beside RAM? Anyone have any luck changing out RAM? The board is 820-3437.