The event "Unit - A unit Learns a skill" is used specifically for heroes, both for when they initially learn a skill and for when they train a higher level of an already learned skill.
The events "Unit - A unit Begins/Cancels/Finishes research" is used for units (usually buildings) that are researching upgrades such as Iron Forged Swords, Animal War Training, Defend, etc.
The events "Unit - A unit Begins/Cancels/Finishes an upgrade" is used for units (usually buildings) that are upgrading themselves to a higher level, such as a Town Hall upgrading to a Keep, or a Scout Tower upgrading to a Cannon Tower.
It'll be good practice at least, I did a bunch of practice boards the last few weeks but that's a bit different than actual repair. It's pretty obvious what's going on with those, so it's not very hard to trace the leads, and they aren't designed with faults so
Site is peaking on traffic for the recipes - Sundays are always the big days and we are 200 plus unique visitors an hour right now and it will be like that probably be around 3000 total on the site all day maybe more if Google desires it LOL
Anyway I have a power bench that I don't actually know how to use, but I'm assuming I can take the battery out and power it directly from that to see if any of them turn on.
If you had kids like me that grew up in that era you could just go to your closet and fish out one of the cords from the cord bag. I bet I have everyone of those cord connectors plus some