First post, by Dooser
Recently bought a Thinkpad 365X and was disappointed to see it wouldn't POST. No display, no beeps, just the FDD and HDD access lights ON all the time. Just like in this video: https://youtu.be/7xmpJXRBp1o.
I had a close look at the system board and found that one of the capacitors (C78) had leaked. It's highlighted in the attached image. After cleaning up the mess and replacing it, the laptop started right up. In my case one of the pads was damaged from the corrosion, but there was plenty of surrounding metal to solder to.
An identical capacitor (C29?) can be found nearby and should also be replaced, but mine tested good so I left it in.
Hopefully this will help someone revive their computer.