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HP41-CV Troubleshooting
07-26-2020, 05:38 AM
Post: #1
HP41-CV Troubleshooting
When putting in new batteries / turning on my HP-41CV I'm either getting

1) a high pitched squeal
2) a set of characters on the screen

https://imgur.com/V363v29

I have tried a hard reset without success. The batteries are new and the battery terminals are in good condition without corrosion.

I have also tried the options here
https://www.hpmuseum.org/cgi-sys/cgiwrap...i?read=149

What can I try next.

Many Thanks
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07-29-2020, 11:33 PM (This post was last modified: 07-29-2020 11:34 PM by Diego Diaz.)
Post: #2
RE: HP41-CV Troubleshooting
Hi,

Hard to tell without some pictures (from different angles) of your CV. Most common cause of failure on the 41 series (mainly on full-nut type) is the broken screw post syndrome.

You may want to open your calc and check if the screw posts are not damaged/broken.

Share some pictures if you're not sure about what to look for.

Regards.

Diego.

"Do not suppose, check it twice."
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