Do you have even a minor retro collection? Or some older machines still running? The batteries inside them, especially 1/2AA lithiums, do tend to leak and destroy everything in their bubbling corrosive wake. Check for them and remove them all.
@PhenomX6 the bit I dislike about the little lithiums (though they’re not soldered on thankfully!) is they can let go and boil & spatter their innards suddenly. Rest In Peace se/30. Especially the late 80s early 90s ones - in the most desirable models of course!
Yep. NiCDs are more of an Acorn, Amiga, vintage PC, x68000, and PC-98 thing.
It's not uncommon to hear about an x68k totaled by a battery leak or after numerous repairs, how it will never "work right" but yet someone can fish a x68000 out of what looked to be a flooded basement and it'll work if it had a coin cell. Essentially NiCD leakage and those acid bombs in Macs are worse for the hardware than Japanese climate conditions.
@PhenomX6 It's surprising what a board can survive when it's not battery damage! I had a IIcx that'd been through a flood, full of silt, and had a mouse nest built inside it with all the pee that entails. Washed it off and it fired right up.
Alas, it suffered an ADB failure many years later. RIP.