A reminder to remove the PRAM battery from your Mac, or replace it with a new one every few years to prevent this from happening. This was a Macintosh IIvx with its
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MacBatt CR2032 PRAM Apple Macintosh battery from Siliconinsider on Tindie
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SAFT LS14250 3.6v PRAM Battery For Apple Macintosh eMac iMac PowerMac – local338
How to Replace a CMOS Battery on a Windows PC | Sweetwater
1998 Bondi blue iMac rev A had it's pram battery explode and doesn't boot. This is after I cleaned the chips and board with alcohol. Is this savable? : r/VintageApple
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