Macro buttons allow you to do sets of button combinations by pressing a single button.
For example; say you have a combination of a-x-a-x-a-a-right trigger. You could assign that to the white button and then when you press the white button it will automatically do that combination.
The macro button is purely for convenience.
Read the instruction manual to figure out how to work it, you'll probably have to fool around with it a bit to get it right.
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