50g - strange power on problem

[Geoff Quickfall]

Start up sequence is software which can be corrupted especially by low batteries in conjunction with constant memory sustained by a super cap.

One must drain the super cap as Bob states by shorting the battery terminals or letting charge drain over hours to days dependent on the super caps ability to hold a charge.

Ex.

Had an HP 01 with low batteries and when tested displayed garbage. Replaced all two display batteries and still garbage. No super cap, but I did not change the memory battery button cell. Still displayed garbage and figured the display driver failed. Removed battery thinking trouble shoot another day. Two weeks later installed batteries to trouble shoot and it worked perfectly.

Google HP 41C memory reset, static charge, synthetic programming faults and you will see a plethora of super cap charge retaining corrupt memory.

Geoff