This is the #HP #16702a logic analyzer restoration thread. It covers cleaning up pcbs against corrosive glue, replacing the harddrive and cleaning the device and case alltogether (ita extremely sticky)
A more cohesive story will eventually land on https://museum.dantalion.nl
Special thanks to @tubetime and @CuriousMarc for the inspiration over the years!
So first up we pull out the #16716a turn it upside down and indeed see the protective covers, the foam and ahesive. This needs to go as the glue turns corrosive damaging the traces.
Luckily, our glue and foam became extremely dried out and britle, this is a big plus and combined with the minimal corrosion made removal trivial.
I used the plastic sleds as a scraper, being careful to test on a non-critical area hoping the plastic would be chosen to be to soft to damage silkscreen and traces.
This turned out extremely effective and I had most of the board clean in about 3 hours.
Then some thorough cue tip cleaning with isopropyl and we are good to go for this board hopefully. Worst corrosion is a couple of vias which have become untented, I consider myself very lucky.
Next up imaging the IDE harddrive and replacing it. It makes sounds that make me very nervous.
@penguin42 I am unsure about the exact architecture of the CPU at this point, it runs at 150 MHz.
The system indeed does some form of HP Unix with X11 window server and a window manager to make it look and feel like windows 95.
Dantali0n 
penguin42