HP-21 Disassembly Help...

[Jeff_Kearns]

(04-02-2016 02:49 AM)Geoff Quickfall Wrote:  ...try an electronics shop or the Source (radio shacks replacement).

Geoff - I managed to find a can of deoxit red at an electronics store in Ottawa called Gervais Electronics. I looked all over... Boy I miss Montreal. They had a ton of electronics stores.

Now I have the following problem preventing me from pressing down on the battery prongs to release the keyboard top, as shown in the attached screen-grab from your video.    

I took a picture of the battery compartment in my HP-21 - see below. It is a rather crudely modified unit that the previous owner soldered together to accept AAs. The solder job is such that the prongs are bigger than the plastic slots so they won't go through!

I don't feel comfortable doing surgery on it without getting further advice... help.

Jeff