deskthority

Hi guys, this's my first Model M ever, a terminal one. So I did a soarer convert and it's worked. But all key in 2 last row did work (shift row and space bar row) except numpad. I tried hid-listen but it didn't send any signal.
After open all the thing, I see these tracks (picture) seems like burned or sth. Is it burned? Hope someone can show me how to fix it. Thank you.

It certainly could be damaged, though I'm not able to tell from the photo if it truly is.

Any chance you have a multimeter or continuity tester? You should check to see if you have continuity across those traces.

oh nice, i think a simple led circuit should work huh?

Yep, that should work

this kind of mild oxidation inside the membrane is normal for a keyboard over several years and should not cause any problem. I would suggest you clean the contact area that plug into the FPC socket with mild alcohol or pencil eraser(not the one for erasing ink). strong alcohol will remove the silver trace so be-careful.

anthonymak wrote: ↑

24 Sep 2019, 06:00

this kind of mild oxidation inside the membrane is normal for a keyboard over several years and should not cause any problem. I would suggest you clean the contact area that plug into the FPC socket with mild alcohol or pencil eraser(not the one for erasing ink). strong alcohol will remove the silver trace so be-careful.

Thanks man, i found some bad traces in other sheet, it definitely causes missing rows. Thank you all.