I think the Logitech board is supposed to be compatible with the Microsoft (Inport) Mouse. Basically I think they were copying Microsoft's "standard" and then that standard did not so much materialize.
I have the Portable Plus. Pictures of the Plus would be amazing.
This caused some controversy, and in hindsight I regret doing it, but I broke (tore...) the metal bar on the right of the CRT. That shouldn't really affect functionality; otherwise everything's fine. But I honestly forget where some of the random metal boards with rubber stoppers on them.
Here's another/general question: my Plus would blow out its fuse anytime it was turned on (which is why I eventually went for salvaging the disk drive to use in a more modern desktop to write TRS-80 and Kaypro disks). Can I test the power supply by itself? i.e. disconnected from everything - can I plug in a cord and flip the switch to see if it does not blow its fuse? I don't know how to test the PSU before I move to just replace it; and I don't know that replacing it will be super cost-effective.)
I have the Portable Plus. Pictures of the Plus would be amazing.
This caused some controversy, and in hindsight I regret doing it, but I broke (tore...) the metal bar on the right of the CRT. That shouldn't really affect functionality; otherwise everything's fine. But I honestly forget where some of the random metal boards with rubber stoppers on them.
Here's another/general question: my Plus would blow out its fuse anytime it was turned on (which is why I eventually went for salvaging the disk drive to use in a more modern desktop to write TRS-80 and Kaypro disks). Can I test the power supply by itself? i.e. disconnected from everything - can I plug in a cord and flip the switch to see if it does not blow its fuse? I don't know how to test the PSU before I move to just replace it; and I don't know that replacing it will be super cost-effective.)