HP-12C Platinum won't turn off after screen self-test

[lvt]

(11-28-2023 02:43 AM)Mark H. Shin Wrote:  Original test calc was 12C Platinum (China production):

S/N CNA02113887
C 2004 hP
ChE - - 564Ah

After your origin question, I also tested a Phillippines version:

S/N PHA92004WC
C 2004 hP
ChE - - 564Ah

Same results. Looks like it's a "feature" !

Thanks for the info.

My 12CP is also made in the Philippines, same Checksum.