(deleted post) - Printable Version +- HP Forums (https://archived.hpcalc.org/museumforum) +-- Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum-1.html) +--- Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum-2.html) +--- Thread: (deleted post) (/thread-143786.html) (deleted post) - deleted - 11-14-2008 This Message was deleted. This empty message preserves the threading when a post with followup(s) is deleted. If all followups have been removed, the original poster may delete this post again to make this placeholder disappear. Re: Possible Silver 17bii+ Actuarial Inaccuracy: compare against 12c, 27s, 17bii, and more - Scott Newell - 11-14-2008 20B gives \$1799.80 as well. Re: Possible Silver 17bii+ Actuarial Inaccuracy: compare against 12c, 27s, 17bii, and more - Don Shepherd - 11-14-2008 Allen, my 17BII+ Silver (serial CNA72600010) gives pmt=1799.80, as does my 12c, 12cp, 17B, 17BII, and 17BII+ Gold. I wonder if this may indicate a bug in a later ROM release of the silver (assuming they changed the ROM between my serial number and yours). Re: (deleted post) - Allen - 11-14-2008 Sorry! I found the solution to the question above by checking the BEGIN/END settings which are not reset on the 17bii+ when the Machine is soft reset. When I tried to delete the question above it kept the other responses, making for a silly looking thread. :( sorry. If you'd like to see the question: I was doing a Financial Calculator bake off with a number of HP models today and have become puzzled by the following Amortization: N=180 (15 year) I/YR= 5.875 PV=\$215,000 PMT= Solve FV=\$0 When run on every other calculator I have including 48g, 27s, 12c 12cp, 12cp-25th, 17bii, 17bii+(gold), 14b-50th, and 10b, and even MS Excel I get PMT=(\$1,799.80) but the Silver 17bii+ says I should pay (-1791.04). I've reset all machines, confirmed P/YR=12 values. When I set I/YR to 0% the Silver 17bii+ agrees with the others, but becomes slightly off for any value non-zero of I. I have tried several other scenarios, varying N, and PV, and for non-zero interest values the 17bii+ Gold and Silver do not agree. Perhaps there is something else I'm missing? FWIW, 17bii+ SN is CNA81102019.