PM sent! Yes, I would love to get a nice copy. I have two of these, both ebay failed units. However, I was able to get several repairs done on them:
1. The main problem was tin whiskers from the steel supports around the switches. All sorts of strange malfunctions. It took a few rounds of scrubbing and blowing out with air to get them clean.
2. One unit had a burned-out LED. I replaced it with a NOS HP part.
3. Both units had an idler gear in the printer break. The plastic disintegrated. I replaced it with a brass gear in both. It was an in-stock gear that I had to get machined down to fit in the unit.
4. The thermal print heads filled up with paper and ink dust over time. I cleaned them out with alcohol.
5. The white plastic screws in the printer assembly tend to break. I replaced them with steel screws. Watch the clearance.
6. The printer assembly has rollers on each side to run the paper advance. These had flat spots worn on them. I put "tires" on the rollers by putting heat shrink tubing over them. It took several iterations to get this right. Note: The extra torque from the tires is what pushed my idler gear to the limit.