Tag: 1970’s

Repairing the Melcor 390 Calculator Part 1 – An Exercise In Patience

So, after many many delays, I got the Melcor 390 calculator fixed. Oh, it was an absolute joy to get done soldering the capacitor in and finally seeing the LED’s fire up with “EEE1” and other garbage data, as this little calculator does when it’s first powered up. If you don’t know what I’m talking […]

Update On The Melcor 390 Calculator

So, you may recall a few days ago in my thrifting adventures I snagged an old 70’s calculator that, after working for a few minutes failed in a flurry of smoke and heat. If not, the previous article will be shared below. https://www.xadara.com/i-got-a-vintage-70s-calculator-and-then-it-blew-up/ Well, I mentioned I would ask on the eevblog forums about what […]