Repairing the live stream supercomputer panel

This is the supercomputer panel that appears in the background of the weekly live streams on the BigCliveLive channel:-
https://www.youtube.com/channel/UClIzWmVzGPm2zhNT2XZ-Rkw

Thanks to the wonders of eBay being China's electronic component dumpster, a fully factory sealed antistatic bag of 1000 flashing LEDs managed to have quite a high failure rate.
It was suggested that I exchange the faulty blue ones for red ones to show the progressive failure across the panel over time.

The piece of silicone tube I'm using to grip the LEDs for extraction while heating both pads simultaneously, is standard aquarium style silicone tubing. It's perfect for removing 5mm LEDs.
The PCB is single sided to facilitate easy maintenance. Which turned out to be a good thing.

Here are some of the links I mentioned:-

The Sega Astrodata fortune telling machine:-
https://www.youtube.com/watch?v=h1dnAzrce9E

The Universal Studios Fast and Furious attraction:-
https://youtu.be/87gFEEsGux4?t=181

South Main Auto:-
https://www.youtube.com/channel/UCtAGzm9e_liY7ko1PBhzTHA

And here's a link to the zip files for the PCBs. (A4 Gallium):-
http://www.bigclive.com/freebies.htm

If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
http://www.bigclive.com/coffee.htm
This also keeps the channel independent of YouTube's advertising algorithms allowing it to be a bit more dangerous and naughty.