Question about HP 49g+ Calculator

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HP 49g+ Calculator Does Not Turn On

I bought an HP 49g+ calculator about a year ago. I don't use it very often, but when I last tried to press the "ON" key to turn it on, the calculator would not turn on - the screen remains blank. I tried connecting it to the computer, with the USB cable, using the connectivity software, in case it was the LCD display that malfunctioned, but the computer did not detect the calculator, so I assume that the calculator remained off. I also tried replacing all the batteries, including the CR2032 backup battery. Any ideas on how I can fix this? I hate to have lost the calculator, it wasn't cheap.

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  • fibi Dec 24, 2007

    I bought an HP 49g+ calculator about a year and a half ago. I don't use it very often, when I tried today to press the "ON" key to turn it on, the calculator would not turn on - the screen remains blank.

    Changing batteries did not help either.

  • dalea Jan 24, 2008

    My hp49g+ does not turn on---- new batteries, pushed reset button, nothing! This calculator is too expensive to replace. Any advice?

  • dodena Oct 04, 2008

    have the same problem. The "on" key is damaged. Try clicking repeatedly and someday it will turn on (eventually). My hp also has the same problem with the 3 and spc keys. Tough...expensive but still trash

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

JC

Posted on Nov 05, 2007

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Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

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Posted on Jan 02, 2017

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I haven't turned on my HP 48GX calculator for more than 1 year and I cannot turn it on now even I change the new batteries. I hope you can help me, thanks.


It may just be a matter of adjusting the contrast of the screen.
Make sure batteries are good. Press and HOLD the ON key. Press + to increase contrast OR - to dim the screen.
At the end of the post you will find a link to a repair shop, but first I suggest you perform the following tests.

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 beginning 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 right rubber pad (when you are looking at the back of calculator ) 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 diagnostic 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. Release the [ON] key.
It tests the RAM and ROM. You will see various patterns on screen. Afterward you should see
IROM OK,
IRAM OK,
HP48GX OK
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 high 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
You can also try this site. They do repairs on most models, except the newer ones.

Aug 24, 2010 | HP 48gx Calculator

2 Answers

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.
  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
IROM OK,
IRAM OK,
HP48GX OK
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.

Nov 29, 2009 | HP 48gx Calculator

1 Answer

Replace cracked LCD screen on HP 50g


It doesn't look good for being able to purchase the display as a part. I checked HP and the unit is not listed. I saw a 49G but no repair parts listed. you can research with HP at:
http://h20141.www2.hp.com/hpparts/part_search.asp?mscssid=1237E7A2A0D7420DB6F72ACEAF1A2FE3
Hope this helps

Mar 21, 2009 | HP 50g Graphic Calculator

1 Answer

When I turned on my 48gx a month ago some of the alpha keys did not work. Today most of the keys(alpha,numeric as well as functions) don't work. I've owned this unit for over 7 years and have barley used...


Hello,
Before thinking of repairs, you should first determine if it needs 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.

The following procedure valid for the 48G should work for the HP48GX.
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
IROM OK,
IRAM OK,
HP48GX OK
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.
Hope it helps.

Mar 04, 2009 | HP 48gx Calculator

1 Answer

HP48SX Battery drain


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.





Nov 13, 2008 | HP 19BII Calculator

2 Answers

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


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.

Oct 10, 2008 | HP 49g+ Calculator

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