HP82143A Repair - Paper Advance and Round O-rings

[[kby]]

There was someone on TAS that sells square o-rings for 65/67/97 card reader rebuilds. I think those worked when I tried although they were a bit tight. I’ve also used shrinkwrap tubing and silicone rubber tubing, I think. It’s been a while. The trickiest part is ensuring both sides are both the same size.