my 41C is making a high pitched beep?

[Dubois]

Every key i press, even the on button emits a high pitched beep. I cleared all audible flags, but it still does it. Any suggestions? Thanks

[Emmanuel, France]

Please make it beeping with the following command:

XEQ ALPHA B E E P ALPHA

I think it will work well after that.

[Dubois]

Thanks, but it still is beeping with every keystroke

[Emmanuel, France]

Did you try a MEMORY LOST?

Did you remove battery too?

Where do you live? In France or Canada?

[Dubois]

Actually California, but my parents were from Toronto. I tried all of that, still no luck. I am beginning to think that the calc is broken....

[Emmanuel, France]

I have some experience in fixing HP-41s. Which model is it? C, CV or CX? Fullnut or Halfnut? MAy I help you, I have spare parts of HP-41s. S&H not heavy from US? You have my email.

[Håkan Thörngren]

If you have CF 26 and then BEEP it do not think it will help as that makes the HP41 silent. Any BEEP or TONE that will make a sound (SF 26 first) should make the high pitched sound go away.
The high pitched sound is usually the result of garbage (non-zero) in the internal T register which used for making sound. Any normal beep/tone will put 0 in T when done.
If that does not help, then you probably have a hardware problem. Some remove battery battery trick might help, if you are lucky.

[Juergen Rodenkirchen]

Hi!

I have an at least similar "phenomenon" encountered on my HP-41C. This unit "sounds" a very high pitched tone when an arbitrary module is plugged into certain ports (contact problem?). So, if you have any module(s) installed, de-install it (them) and try again.

Regards, Juergen