deskthority

He's talking about that, but also the various solder joints on the controller's PCB.

You could also take a pencil eraser and gently remove some of that corrosion on the membrane contacts, shouldn't hurt.

Yeah, I did that, and gave it another go just in case. No change. The PCB's okay, I checked ...

Before you rip out the rivets, you can also check the controller PCB. It's possible that some solder joints are corroded affecting the 6 traces, considering your keys either 100% work or 0% work for any line. Check everything else before doing something irreversible.

Sorry, I'm a bit confused. Do ...

Hey, I'm new here too. But I just so happen to be working on a couple M122s right now, so I figured I can try to lend you a hand.

First, try to reseat your ribbon cables. If keys still fail, you might need to do a bolt mod and fix 6 traces.

There's a small chance your broken traces are at the end ...

Hey everyone! I just made an account here because I need help with a terminal Model M I bought recently. Its missing 3 key caps and was in some pretty rough shape when I got it, but it seemed like a good deal for $30. After doing some cleaning it was looking good, and it didn't really seem like it ...