I have a bad HP41 time module, can see the catalog of functions, but when I execute the CLOCK function (or SHIFT ON), the calculator powers off! Is not the calculator, I have tried it in an HP41C and HP41CV with same results.
It seems that the quartz crystal of the time module is faulty. At which frequency is rated the quartz crystal of the time module? According to Appendix F of HP41CX Volume 2 manual the frequency is 10240 Hz. is this right? Any help would be apreciated.
thanks