HP-41CV Battery Problems

[rprosperi]

(04-03-2015 09:28 PM)bshoring Wrote:  I have an HP-41CV that will only work if I hold the battery pack at an angle. It's the original battery holder with 4 n batteries in it. If I close the holder properly, it won't work. The contacts in the calculator all look clean.

Has anyone had any experience with this problem ?

Thanks,
Bob

Definitely an issue of dirty or damaged contacts in the 41. Try cleaning the contacts gently with a cleaner such as DeOxit - they even have a formulation just for battery contacts, though that may not be needed, the normal stuff works pretty well.

Has there ever been battery leakage in this 41? If there has been a spill in the past (even long ago) it's possible the contacts have been eroded or bent by prior cleaning.

Be firm but not too hard on the contacts when cleaning, the material is flexible but can be bent or broken.

If too damaged to clean, you can replace the flex connector, but it's tedious.

Good luck, let us know how it turns out.