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CASIO fx-4000P scientific calculator from 1986
06-06-2019, 08:22 PM (This post was last modified: 06-06-2019 08:31 PM by ijabbott.)
Post: #41
RE: CASIO fx-4000P scientific calculator from 1986
(06-06-2019 06:54 PM)cdmackay Wrote:  
(06-06-2019 04:20 PM)ijabbott Wrote:  They also dropped the bitwise logic operations (but kept the BIN/OCT/HEX/DEC arithmetic) between the fx-3400P and fx-3600P, added them back in for the fx-3600Pv (another one for you to seek out), and removed them again for the fx-3800P. (EDIT: There also seems to be a fx-3600PV (with a capital V) that doesn't have the bitwise operations, just to confuse things further! EDIT 2: That one seems to be a fake Casio according to this.) Somewhat annoyingly, I bought a fx-3800P from a major UK stationers back in the day and didn't discover the lack of bitwise operations until it was too late.

sigh; I'd not really looked into the Pv models, assuming them to be non-UK, on which I was concentrating. But now I think I will have to!

I think the fx-3600Pv (the real one, that is) probably was non-UK although the user manual was printed in at least English, Spanish, French, Chinese, Korean, and Indonesian. Some of the images of the (real) calculator I have seen have "H.K.E.A. APPROVED" printed on them (and so do pictures of the fake one), suggesting it was sold like that in Hong Kong.

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06-06-2019, 11:26 PM
Post: #42
RE: CASIO fx-4000P scientific calculator from 1986
Indeed; I've always thought the Pv models look a bit garish, with all that "SUPER FX" etc, compared to the more restrained design of models sold in the UK (at least, the ones I was used to).

That said the 3400P looks a bit different, too. And those rubber buttons, sigh.

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10-24-2021, 04:55 PM (This post was last modified: 10-24-2021 04:56 PM by Dan C.)
Post: #43
RE: CASIO fx-4000P scientific calculator from 1986
I have a FX-4000P that have the problem with a partly loose front bezel.
How do i fix this? Is the front bezel just glued on or?
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10-24-2021, 09:55 PM
Post: #44
RE: CASIO fx-4000P scientific calculator from 1986
(10-24-2021 04:55 PM)Dan C Wrote:  I have a FX-4000P that have the problem with a partly loose front bezel.
How do i fix this? Is the front bezel just glued on or?

They would probably use double-sided adhesive tape (or a sheet cut to a template). Liquid glue would be too messy for manufacture.

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10-25-2021, 05:47 PM
Post: #45
RE: CASIO fx-4000P scientific calculator from 1986
(10-24-2021 09:55 PM)ijabbott Wrote:  
(10-24-2021 04:55 PM)Dan C Wrote:  I have a FX-4000P that have the problem with a partly loose front bezel.
How do i fix this? Is the front bezel just glued on or?

They would probably use double-sided adhesive tape (or a sheet cut to a template). Liquid glue would be too messy for manufacture.

Thank you for the info! I will try with some double sided tape then!
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07-14-2022, 04:50 PM (This post was last modified: 07-14-2022 05:45 PM by Dan C.)
Post: #46
RE: CASIO fx-4000P scientific calculator from 1986
(12-05-2015 03:25 PM)jebem Wrote:  And as expected, I had to dismantle the machine for cleaning and checking.

This specimen had poor LCD contrast.
The issue was fixed after cleaning the battery holder connection pads on the PCA.

I know this was a while ago, but i must thank you very much for the great pictures of the FX-4000P
internals!
It helped me a lot now when i needed to take it apart, and then to get it back again!

edit: hmm, why do i always type FX-4000P, when its fx-4000P ? Smile
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07-15-2022, 02:59 PM
Post: #47
RE: CASIO fx-4000P scientific calculator from 1986
(12-05-2015 03:25 PM)jebem Wrote:  This specimen had poor LCD contrast.
The issue was fixed after cleaning the battery holder connection pads on the PCA.

Thanks for the tip, I've got a Radio Shack version of the fx-4000P (EC-4020), and it had flickery contrast. Cleaning these two contact pads fixed it right up. I had been assuming it was an issue with the contrast pot. I think I've got at least one FC-200 that could use the same treatment.
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07-18-2022, 05:30 PM (This post was last modified: 07-18-2022 05:56 PM by Dan C.)
Post: #48
RE: CASIO fx-4000P scientific calculator from 1986
(10-25-2021 05:47 PM)Dan C Wrote:  
(10-24-2021 09:55 PM)ijabbott Wrote:  They would probably use double-sided adhesive tape (or a sheet cut to a template). Liquid glue would be too messy for manufacture.

Thank you for the info! I will try with some double sided tape then!

Update: I used 2mm wide double sided adhesive tape for reparing Smartphones, Iphones etc. Worked out very well!
(to fix the front panel that had come loose)
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07-19-2022, 07:52 AM
Post: #49
RE: CASIO fx-4000P scientific calculator from 1986
Question: How does the 4000p compare with, let's say, the 32sII?
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07-19-2022, 06:19 PM (This post was last modified: 07-19-2022 06:39 PM by Dan C.)
Post: #50
RE: CASIO fx-4000P scientific calculator from 1986
(07-19-2022 07:52 AM)amalahama Wrote:  Question: How does the 4000p compare with, let's say, the 32sII?

I think the 32sII has more Mathematical power, but the thing with fx-4000p for me is the great look and the near basic-style programming mode. Has there ever been
a more handsome looking machine??
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