Well, I took out the TR1 keyboard and eventually got the spacebar keytop to fit back in place. It is tricky and I don’t think I could have done it without removing the keyboard.
Under the spacebar keytop are two wire hinges. Each end terminates to make four total attachment points. The wires on the keytop fit into brackets on the base. Then you press the spacebar down hard in three places. There are inverted-V white “springs” on the base; pressing down snaps the keytop so it grabs them. It is simple once you have done it, but takes some thought and visualization to figure out the first time.
How to remove the TR1 keyboard:
- 1) Turn the TR1 over and pry up the two rear gray rubber feet. Each hides a small Phillips screw. Remove the two screws.
- 2) Turn the TR1 right-side up again and examine the top edge of the keyboard. Note the tabs above the F6 key and the left side of F11. Using jewelers screwdrivers or a very fine touch, GENTLY lift the upper left of the keyboard (ESC) while pressing in the F6 tab. By “pressing in” I mean “slide back towards the screen”, not “press down vertically”. When it goes back far enough, the keyboard will lift up and block the tab from popping back into place.
- 3) Still lifting gently from the upper left, repeat with the F11 tab. The keyboard is now very loose.
- 4) Fully remove the keyboard by sliding forward (towards the screen) and up so the four tabs at the bottom of the keyboard slide out of their slots.
- 5) The keyboard is now attached only by a ribbon cable. Carefully slide this out from under its holder. If you want to fully remove the ribbon cable, do this by lifting the right side of the brown connector on the circuit board. The top of the connector rotates left, almost like opening a small very skinny door. The ribbon cable comes out. It does not have a connector, just bare tabs.
- 6) To reassemble, reverse. The ribbon cable goes in a slot on the left side of the brown connector. Snap the brown connector top down (like closing a small very skinny door.) Put the ribbon cable back under its holder. Snap the keyboard back in—the F6 and F11 tabs will automatically catch. Put the screws back and finally the rubber feet.
The keyboard-removal procedure is not difficult and not really dangerous. Just work carefully to avoid snapping the F6/F11 tabs or accidentally scratching anything. It was more dangerous for me to pull up on my spacebar keytop (to get a crumb out from under it) and then risk breaking a bracket. Fortunately, the spacebar seems fine now.
I have a photo showing the TR1 inside with the keyboard off. It is not real exciting but I could post it if there aren’t some sites that already have photos of the interior. If there ARE sites that already have interior photos, maybe someone here could post a link to the pics.