on a scale of 1 to WE COPYRIGHTED THE FUCKING PLASTIC CASE OF OUR DUMB TERMINAL, how many layers of IP law are you on?
So I resoldered the couple of questionable caps and put it partially back together, but it's still got the RAM issues. I was kinda hoping the caps would alleviate that problem.
I still can't get into the testing mode since I don't have a keyboard for this specific unit, so I can't figure out which memory chip it is that's failed (and there's like 5 on the PCB)
@foone If you have replacement RAMs, you can piggyback them.
Take the known-good chip, bend the legs in a bit, and slide it on top of the suspect part so the good one's pins make contact with the suspect one. If your problem goes away (or, sometimes, changes in a meaningful way), that's probably the bad one.
It's a low-grade technique, but you can't argue with results.