Hi Guys
I could have sworn the forum had a specific vintage computing section. Was it removed?
I have an Atari Lynx with momentary pushbutton on, and a separate momentary button off.
most of this circuit is a complicated latch, and some diode protection, with a suicide diode.
At the end of the day though, it's just a cheap Zener regulator at the far right of the schematic.
It's prone to failure, overvolting the unobtanium silicon with the ~9V battery supply.
I want to replace this with one of the Tracopower switchers that are designed to replace a 7805.
I'm just unsure if what I'm doing will interfere with whatever is going on for latch feedback at TP19.
Should I keep the 120R, remove the Zener, and connect the reg input across where the Zener was?