Question about HP 15C Scientific Calculator
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Posted on Jan 02, 2017
SOURCE: HP 32 won't work
Hey Dave- take a look at the following link. I like to have the user actually look at the user guide instead of describing it. If this solves your problem PLEASE rate this as fixed. If this isn't exactly right or you need more help just add a comment and I'll be glad to help you further. Thanks.
Posted on Apr 30, 2008
This calculator uses RPN (reverse polish notation) not algebraic notation.
If say you want to calculate 12+13, you proceed as follows
12 [ENTER] 13 + : the claculator displays 25
12 [ENTER] 13 x : displays 156
Also if you use a function like sinus or cosinus
12 [ENTER] cos displays the value (depending on the angle unit you are using).
I think you need to read a little more on the RPN before you get accustomed to this way of doing thing. The best reference is your calculator Getting started manual.
Hope it helps.
Posted on Aug 24, 2009
The calculator battery may be weak. Replace 3 AAA cells and check if it works.
It is possible that sweat from your or someone else's hands hand leaked inside and dried up leaving a salt residue between the connections.
Remove the screws on the back panel to dismantle your calculator then use a piece of paper to clean the contacts between the top and bottom connector.
If you cannot get this done then take it to a watch repair shop. The person there can assist you.
Posted on Sep 09, 2009
Hi, if pressing on and F5 together immediately starts the selftest your keyboard is OK, but one of the capacitors on the HP49G PCB are broken. I replaced all three and the turn on/off problem was gone.
Hope this helps.
Posted on Nov 20, 2009
SOURCE: My HP 48G does not come on.
In the keyboard test (below), make sure the keys are pressed in the right order. If the calculator fails the keyboard test then it needs repairs. (Ignore the begining of the post and skip to the last part For Repairs )
You can reset the calculator:
Turn the back of the calculator towards you. Extract the top left rubber pad on the back of the calculator and use a paper clip to press the Reset button. If that does not restore the calculator to health, you should perform the dagnostic tests.
Make the calculator perform a
The self test will continue repeatedly until you perform a
If you do not see IROM OK and IRAM OK, the calculator requires service.
If the above procedure is successful, you may want
to test the keyboard.
If you follow the proper sequence and a hexadecimal number appears after pressing a key, the calculator requires service.-
There is an HP customer self repair (CSR) which you can contact. On the site it is sais that the service is available for products under warranty or on contract. but you have nothing to lose by contacting them. Here is the link to the web site
You can also try this site. They do repairs on most models, except the newer ones.
Hope it helps and Thank you for using FixYa.
Do not forget to rate the solution.
Posted on Nov 30, 2009
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