HP Forums

Dear All,
My hp20s is out of order,but it want repair it.I can't see any screw in the back cover. Can you tell me how to disassemble it.
Thx
joshua

Joshua --

These Pioneer-series calculators are not really desgned to be repaired, but it can be done. Here are several contributions from the Articles Forum on this website:

http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/articles.cgi?read=5

http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/articles.cgi?read=451

I should mention that, even after being discontinued in 2002, the HP-20S is still plentiful and readily-available from eBay and other sources, for a reasonable price.

-- KS

Dear Karl Schneider,
Thank for your reply.
Thx
joshua

And if you find it not repairable, the Hp33s algebraic mode is AOS just like the Hp20s. Therefore the Hp33s is the closest direct replacement for the older Hp20s also.

Thank you for your replay, I don't like the hp's style of current model . I like the old model such as hp22s , hp20s , hp 12c , hp15c. I prefer repair my hp20s .

Quote:

---

Thank you for your replay, I don't like the hp's style of current model . I like the old model such as hp22s , hp20s , hp 12c , hp15c. I prefer repair my hp20s .

---

Hi, Joshua. Here's a like to a calculator dealer that is advertising new 20s' for sale:

http://www.usedcalculators.com/hpmain.php

Regards,

John

Dear John,
Thank you for your information. I also buy a new one form e-bay.You also reach in here.It is come from HPCalculatorscom.The price is about US$50 + shipping(US$25 to Hong Kong ),but I don't known that the shipping is very expensive just for USPS Airmail.
Thx