HP48S strange behavior

[ijabbott]

(06-29-2019 01:59 AM)Brad Barton Wrote:  

(06-28-2019 05:03 PM)BartDB Wrote:  Underneath is a grey sponge strip that pushes it onto the main PCB. This sponge deteriorates and causes a bad connection. It is best to replace the sponge strip it while you can.

What is a good material to use to replace the sponge strip> I've tried a few different pieces of foam I've had lying around, but none see just right. Any pointers on the best foam to use?

Brad

Logan West used a couple of layers of Scotch double sided foam mounting tape in his repair videos for HP-32SII (https://youtu.be/Uo4EZG0NQbc) and HP-20S (https://youtu.be/G8wS95wK4bI). He cut the tape into thin strips with a craft knife and stuck two layers together to get the right thickness.