Corrosion near/underneath HP Logic Analyzer module plastic runners
The problem is corrosion…..
Corrosion appears to be happening either directly under or nearby the various sized (but typically 5″ long) plastic runners that line the bottom of the large PCB modules. These plastic runners protect the small surface mounted components on the bottom board from being scraped off when being inserted. Due to the proximity of the modules, with the install order being from BOTTOM to TOP, the front-panel connector edge of the module below it can scrape and accidentally yank off a small SMD part.