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One of my hobbies is collecting vintage computers. Computers in my collection include the Apple IIgs, Atari 400, TI 99/4A, Commodore 64 and Sinclair ZX-81 to name a few of the popular ones. Like all electronics, these systems contain capacitors. Anyone who has collected retro game systems, computers, or audio gear knows to look for caps that have leaked their electrolyte. But, what if you cannot see visual damage, what measurements can you make to verify if an aluminum electrolytic has reached i ...