Sean 🤷♂️🤷♀️🤷
Unsure what was going on here, but the whole main board appears to be wrapped in foil. The interface connector on the rear seems to have a soldered on L-connector with a button to do "things". This poor thing is going to get a full tear down before I even CONSIDER turning it on. #tandy #trs80 #retrocomputing
The foil layers are definitely intentional. Someone really didn't want EMI. They also didn't want a numpad? #trs80 #tandy #retrocomputing #radioshack
Gave it a wipe, gently checked for shorts and opens, applied power and … #retrocomputing #tandy #radioshack #trs80
Comparing the text output of my fairly standard L2 mod 16K Model 1 to this 48K beast. Simple test and I think I have a stuck bit somewhere. Unless the CharGen ROM for this mod is intentionally setting the Underscore modifier here.
Code gleefully cribbed from https://forum.vcfed.org/index.php?threads/trs-80-model-1-with-pound-characters-at-top-of-screen.1246419/post-1361199
De-foiling complete. Still a bit of glue residue to work through. Trying some flux remover as its doing a nice job of making the adhesive mobile again. I can almost get it into a slurry for wiping up now.
I've ordered a 3d printed replacement keyboard bezel based on the STL from
https://github.com/RetroStack/TRS-80-Model-I-Parts/tree/main/Keyboard_Bezel
Keyboard repair started great. Cleaned and prepped so that soldering went smooth. #radioshack #trs80
The hacked up wires did not survive the 2-3 times I opened and closed the sandwich of the two boards today. Spent most of the day just removing the annoying bits of stranded wire used in the through hole connectors and cleaning the 40 year old flux residue.
I happened to have a second batch of pins and wires from the previous work I did on my #trs80 Model 1.
