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This script installs linuxcnc master branch (2.10) after you have installed the ISO on the downloads page.Hakan has tested and refined this further down this thread so I have updated the script here.


You may want to move to version 2.10 to get the latest QtPlasmac for example as the version in 2.9.4 is no longer maintained.
\Instructions:
1. Download  attached script
2. Delete the .txt.extension3. Check permisssions are executible (Right click, Properties and check Permissions tab)
4. Run the script from the folder it is downloaded to: sudo ./update-master.sh

The script deletes and modifies some files in the /etc/apt folder and sub-folders.  It does make a copy of the /etc/apt folder into your home folderI tried on one PC and it worked. On another PC it didn't. If it fails, open the file and run each line individually
after the apt upgrade is complete, running linuxcnc should show version 2.10 on startup in the console and the splash screen.
To update down the track
sudo apt update && sudo apt upgrade

Red LED comes on for a very short period when powered on.
EDITED
To late, but just watched the video, so, i would have not removed the OK looking chip at all, it sure looks like something back powered one of the outputs on that chip as you mention on the video.

Does the drive have a fault output?
Is that fault output wired to Mesa input?
Is the Mesa input pin wired to joint.0.amp-fault in hal?
Those are the things required for a fault to stop the machine, it will not trigger e-stop but it will disable the machine completely, so after fixing whatever the issue was, you can just enable the machine and continue working.