HP-12c 'comma' variant (?brazil)

[dm319]

(08-25-2024 10:31 PM)rprosperi Wrote:  Why HP chose to leave these now incorrect instructions in the manual is not clear (whoever was in charge of the manual was probably clueless as he/she was told that it 'works just like the original').

That's interesting to know. I suspect people will carry out this test when they find a problem, and so this would add to a confirmation bias that the device isn't genuine.

(08-25-2024 10:31 PM)rprosperi Wrote:  Did anyone post which steps/sequence leads to the Error 7 on IRR and NPV ?

From the reddit page:
"The calculator also has a bug when calculating the IRR of a cash flow with less than 4 CFn"

(08-25-2024 10:31 PM)rprosperi Wrote:  Without a specific test problem that leads to this, a series of customer complaints that they're all having this issue sounds non-legit to me, sounds more like people jumping on a bandwagon trying to get a replacement unit, for whatever reasons.

I can think of a few plausible scenarios:

1. The complaints are user error
2. These are fake devices not sold by HP
3. These are fake devices inadvertently sold by HP
4. These are devices sold by HP with firmware that was never meant for it
   

(08-25-2024 10:31 PM)rprosperi Wrote:  Also HP in Brazil no longer manufactures these, all mfg. is coordinated by Moravia, and then sold to Brazil dealers or distributors by Royal (HP's Licensee for the Americas sales markets) so any recent units legit dealers are selling are those w/o the "Hewlett Packard" legend, and made in Philippines.

Looks like some of the devices in the reviews have the bezel without Hewlett Packard, but some do. They seem to be made in China.

(08-25-2024 10:31 PM)rprosperi Wrote:  I seriously doubt these units are Platinums with non-Platinum markings as the Platinum units use an LCD with notably different shapes and style.

I agree, it isn't a Platinum, but has some similarities with my one - 2 x CR2032, made in China - but agree the LCD of the model in question is very much regular HP-12c. Looking around, I can see the HP-12c 30th anniversary has two CR2032 and is also made in China.

(08-25-2024 10:31 PM)rprosperi Wrote:  All that said, I have a 12C from recent production and it does not have the tall percent sign, it has a percent symbol that is similar to the one on the keys to its left, so perhaps there is an imposter source out there, pushing 12C work-alikes into the Brazil market.

Look at the product page of the USA or other official websites - it doesn't have that style of typeface for the keys. I've only seen the tall '%' with the chunkier lettering in the context of HP-12c's from Brazil.

If I'm able to get hold of one - what tests do people suggest I try on it?

EDIT: Edited for tone, apologies.