Thanks for the ideas Finn!
That is one fancy display.
I think you could replace it with an 20x4 LCD display. Suspect it would be a direct drop-in with the 15 pin connector. Yes, you'd have to figure out the backlight (A and K pins) and maybe contrast.
But first check for +5V (you could do that with the display unplugged and plugged in).
If the 5V regulator is bad or +5V is shorted to ground then anything else is pointless.
Next thing I would try is re-seat the CPU chip.
Finn
On 7/31/2024 10:55 AM, DOUGLAS LOMHEIM dlomheim@aol.com wrote:
Group:
Could corrosion like this be indicative of a poor solder joint? I’ll try and clean it up and see if it shows anything more definite…
Sent from my iPhone
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