Sad day for HP-41C

[Massimo Gnerucci]

(12-14-2017 07:55 PM)larthurl Wrote:  

(12-14-2017 12:19 PM)Massimo Gnerucci Wrote:  Then use one of these.

not sure I want to spend $55 on the battery shield if the calc is no good.
Same is true for turning it into a super duper 41.

I think what I'll try is to clean up the crud then maybe redo some traces (if I can). Attached the correct voltage to the circuit board and if calc is OK, then it may make sense to keep going with replacement parts.

My advice was to get the battery shield to avoid similar problems in future, not to spend $55 for it (they are quite rare, however).

(12-14-2017 07:55 PM)larthurl Wrote:  One thing I'm not clear about is if I want to conver to a CL, how much of the original circuit boards need to be intact/working?

Everything but the daughterboard on the bottom side of the calc.