HP48GX Boot Loop - help

[franz.b]

if it helps, I have restored an HP-27s that had been flooded with water and then abandoned. I completely disassembled the keyboard and replaced the plastic rivets with micro screws. I cleaned all the various layers of film that make up the keyboard and restored the damaged tracks with a conductive marker. It worked well. I guess the 48 has the same construction philosophy. Find details in the forum if you search my posts.