Posts: 14
Threads: 2
Joined: Jan 1970
Yes, I have a few 41CVs & CXs. Two of them make noise but this noise does not come from the keypad as Steve’s. I’ve just replaced two batteries contacts I/O on them, and while paying close attention to them, I noticed an ultra-high-pitch long duration (10-sec) sound. It comes from a capacitor that mounts on the cpu board. Actually, there are three or four of them. Sounds like these caps charge and discharge constantly; this whistle does not affect operation though, timing and memory functions on the 41CX are always accurate therefore, I can’t called them faulty capacitors. The most common sound I have heard on these machines is the sound of split screw-posts debris inside the case, then the last sound after this is when it hit the trash can..POONNNHH