Turning 41C into 41CV

[wojtek]

(03-19-2016 10:52 AM)Hans Brueggemann Wrote:  if both are "fullnuts", then you may simply implant the motherboard of your CV, which also holds all the extra memory of the CV, into the C to turn your HP-41C into a Franken-CV.

I have it, don't know yet what is wrong with it
Both are fullnuts. By "motherboard" do you mean the smaller board sitting on the main board and fasten with the 2 screws? I hope so, exchanging the main board, the one tied with melted joints, would be over my skill
Thank you