Working on the keyboard today, not a computer one but a midi one a Roland EP.7 II.
Roland used a red epoxy that gets soft and gooey over time. Add in the Texas heat and you have dripping red sticky goo and weighted keys that the weights fall out of. This leads to keys sticking together and keys being jammed by fallen weights.
I should be doing this up in vector as it is hotter than all outside today. To clean it you need lye and water and a lot of elbow grease. Once it’s cleaned up I’ll need some two part epoxy to put the weights back in the bottoms of the keys.
Here’s the first clue something is wrong… dripping epoxy and falling weights in the bottom case.
It takes a while to get all the PCBs, rubber domes, and springs off and all the keys out of the key bed.
Here you can see the nasty goo where the key weights were epoxied in by the factory:
Keys are in a mix of 1 cup lye and 17 cups water
The keybed is full of dripping epoxy and will take a while to clean…
The weights are soaking separately and they are gross… but are cleaning up very nicely!
The clean keys and weights are soaking in water… I need to change out the water again after dropping so many drippy things in there.