There's a small mod I'll do on AR-II-02's now, when I get one that has one of the 7905's on it that needs a load to read properly (as some do, and some don't). It's one of those 'meant to prevent customer confusion' mods, which I would prefer not to do if everyone was aware of this behavior with 7905's. But the fact is most people don't know, and this will prevent anyone in the future from making the same mistake.
There's a spot to the right of the 7905 where you can add a 1k resistor between -5V and GND, using one of the existing unused holes that is already connected to GND. You just have to drill one small pinhole to connect the other end of the resistor to the -5V trace, which you can solder to by scraping off a tiny spot of solder mask. I bought some teeny-tiny drill bits on ebay so I can make a hole that's basically the size of the resistor lead, so it looks pretty clean.
I don't love the idea of drilling a hole in any board, but I figure it's better than someone needlessly replacing the 7905, or thinking the -5V isn't correct when they go to check it before installing the AR.
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