ThinkJet 2225B battery pack question

[hfischer]

(05-13-2020 02:13 PM)Dave Frederickson Wrote:  The choke has been dipped in epoxy, so it doesn't look like ferrite, but it's not plastic and from the weight I think it's ferrite.

Initiated by this thread, I just received a donation in form of an empty (no batteries, no Picofuse, but with PCB) battery tray - THANKS!

The PCB looks like in your pictures. The choke reacts with a degaussing device, so I assume the core is ferrite.

I already ordered sub-C cells and Picofuses. One question remains: should the Picofuse be slow or quick (I have ordered both kinds)?

Helmut