The machine is back on the bench.Disk 1 looks good, there is the MWP wordprocessor software for ETV 300, as far as I see switchable between french and english..
Disk 2 is something different, Copyright 1983 Logical Systems, Inc. for Tandy computer
Disk 3 is empty, Disk 4-8 too.
The MWP documents on disk 1 seem to include some personal review / curiculum vitae informations in the time frame 1984 to 1998, so you should delete the attachement from your posting to protect them. I even was able to find the guy on linked in, he has a shop for motor bike clothes and protections and spareparts next to Montreal, with website. He is 5 years younger than me but he looks older than I do.
I did not fix the typewriter yet. I'm more inclined trying to fix the computer part first.You can see a large "D" on the left upper part of the monitor. That is good start, that displays that the system does some diagnostics, so processor starts and can access ROM correctly, this is already not too bad. But as we can see from the garbage on the screen it has some problem. Maybe first thing would be to clean up all contacts of socketed chips and the slots and contacts for the two add on cards (floppy controller, video card).
Later on I will have a check, I think I have parts of the service manual of ETV 350, that is the same except of it has 3.5 inch floppy drives.
View attachment 1257980
Did you fixed the typewriter ?
I can try to get to that point.It will start to boot, but then stop and wait for the typewriter.
From the diagrams, my base board looks like the one on page identified 6-7From the diagrams I provided to you, you need to identify which of the base board versions you have. And as soon I got access to mine I need to compare if I have the same. Maybe the ROMs for the board versions are different.