Question about HP 49g+ Calculator

2 Answers

The calculator, hp49g+, will not turn on by pressing the "ON".

I bought an HP 49g+ calculator about two years ago. I don't use it very often, when I tried to press the "ON" key to turn it on, the calculator would not turn on.
Changing batteries did not help either.

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  • steve-00 Jan 12, 2009

    I have the same issue.

    If you do a reset 2 button command - it works but will not turn off again!

    [until a timeout period]



    Rgds

    Steve

  • GOLDENEAG70 Mar 29, 2009

    hp49g+, will not turn on by pressing the "ON"."

  • Anonymous Apr 03, 2009

    My "ON" button seems to have gone for good, doesn't works unless you press it really hard.

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Hello,

If batteries are fresh use a paper clip and insert it in the hole (reset) to the left of the serial number. Press gently.
Hope it helps.

Posted on Sep 10, 2009

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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.

Joachim

Posted on Nov 20, 2009

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My HP 48G does not come on.


Hi,
Warning
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
Self test.
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It tests the RAM and ROM. You will see various patterns on screen. Afterwards you should see
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System Halt
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If the above procedure is successful, you may want
to test the keyboard.
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If you follow the proper sequence and a hexadecimal number appears after pressing a key, the calculator requires service.-

For repairs
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.

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Do not forget to rate the solution.

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Hello,
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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.

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Make the calculator perform a
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If the above procedure is successful, you may want
to test the keyboard.
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  6. Starting at the upper left corner of the keyboard, and moving Left to right, press every key in sequence. If you follow the sequence and the keys are functioning properly you should hear a hight pitch sound at each press.
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To exit the keyboard test proceed as described above under System Halt.

If you follow the proper sequence and a hexadecimal number appears after pressing a key, the calculator requires service.
Hope it helps.

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Hello,


I suggest you use rechargeable batteries. They usually drain faster than the alcaline ones anyway.So have 2 sets of rechargeable batteries. Evaluate the number of days a set lasts. Insert the charged batteries before the old ones are thourougly drained.

The life of your batteries in the calculator depends on the usage.

About repairs: I am convinced that it will cost you more to have it fixed than to buy a new HP calculator (HP 49g*'s, HP 50g* 's).

Hope it helps.





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