Question about HP 50g Graphic Calculator

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I bought my HP 50G 2 years ago but left it in the box. Took it out today, turned it on and got a Warning: LowBat (S). I put in 4 new AAA batteries. Got same message. The manual said that that woul

Of course my warranty is up, so I won't get any help from HP. Any suggestions. But when I click on various keys, I get a beep. I also see what looks like a little triangle blinking above the header. Also what is strange is that I am not in Home, but in Home Pythag. The SR2032 battery is supposed to last for years. I am afraid this is a total lemon.

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Posted on Jan 02, 2017

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SOURCE: HP 49g+ Calculator Does Not Turn On

Try n cold start, reseting the calculator, introducing an wire in the back small oriffice in the calculator. It may fix the problem.


Posted on Nov 05, 2007

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SOURCE: HP laptop does not start.LED screen "warning-battery low

Remove the battery and try to power on with A/C. If the laptop works, the battery is faulty. If the laptop does not work, could be an AC adapter problem.

Posted on Jun 12, 2009

  • 7993 Answers

SOURCE: TI-83 Plus calculators won't turn on despite the many attemps...


It is possible that the contrast is too light as to make the cursor invisible.
In that case you can increase the contrast as follows:

1. Press [2nd] key , then release it.
2 Press [up arrow] key ,then release it.

Repeat the two steps until you get the right contrast.

To decrease the contrast, you press the [down arrow] key instead of the [up arrow] key.

Hope it clears the obscurity.

Hope that

Posted on Aug 26, 2009

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

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

  • 7993 Answers

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
Self test.

  1. Turn calculator on
  2. Press and HOLD the key [ON]
  3. Press and release the key with "E" to its right (the one before last in first row)
  4. Relaese the [ON] key.
It tests the RAM and ROM. You will see various patterns on screen. Afterwards you should see
The self test will continue repeatedly until you perform a
System Halt
  1. Press and HOLD the [ON] key
  2. Press and release the "C" key
  3. Release the [ON] key.
The empty stack should appear.

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.
  1. Turn calculator on
  2. Press and HOLD the [ON] key
  3. Press and release the "D" key.
  4. Release the [ON] key
  5. Press and release the "E" key. KBD 1 should appear on the top left corner of the screen.
  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.
  7. If everything is OK, when you press the last key (+) the screen displays KBD 1 OK.
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.-

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.

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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