WP-34S keyboard overlays wearing out?

[jebem]

(...) Remove the pcb by cutting off the tops of the melted plastic heatstakes (rivets). Then do whatever repairs are appropriate. To put it back together, mount the pcb over the plastic stubs and apply a drop of 5 minute epoxy over each stub. (...)
Shawn
[/quote]

Thanks for sharing your experience with the 30B, Shawn.
I will do the same with mine f I cannot fix it by cleaning the excess of solder ressin flux around the battery connectors that is spread over a few pcb track lines coming from the keyboard columns and rows.