AT&T 4425 (Teletype 56D) repair - FIXED

Seth Morabito lists at
Wed Apr 6 22:12:11 CDT 2016

Well that was fast and easy. Thank goodness.

It turns out the culprit was the Astec power supply. It had a dry
solder joint on the "DC OK" line. A few drops of fresh solder later
and the terminal is good as new (well, as good as any 35-year-old
terminal can be, anyway)

While I was inside, I removed a very old but thankfully non-leaky
battery. Need to figure out a new battery if I want to preserve

If anyone is interested, I did dump the terminal's ROMs while I had it
open. They're here:

Seth Morabito
seth at

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