Question about HP 12c Calculator

1 Answer

HP 15c Passes self test but screen flashes - wont turn off

Passes self test but screen flashes and buttons may be inoperative. Does not turn off It is a 15c - couldnt find that in your list of products

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • HP Master
  • 7,993 Answers

You can get rid of the flashing (usually due to memory overflow) by pressing [<-- left arrow] [ON] or [g] [CF] 9.
If you want to reset permanent memory
1.Press and hold [ON] then press [-]
2. release the [ON] key, then the [-] key.
Screen displays Pr Error.
Press any key to clear display.
Hope it helps.

Posted on Sep 25, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get to try the service completely Free afterwhich it costs $6 per call and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

HP 15C commas and decimals interchanged

Turn the calculator off, press and hold the decimal point key, press ON, then release both keys.

Apr 20, 2013 | HP 15C Scientific Calculator

1 Answer

The battrey leds stay flashing i changed battries also the led still flashing

Automatic: The UPS performs a self-test automatically when turned on, and every

two weeks thereafter (by default). During the self-test, the UPS briefly operates the

connected equipment on battery.
Manual: Press and hold the button for a few seconds to initiate the self-test


Replace Battery LED flashes and

short beep is emitted every two

seconds to indicate the battery is


Check that the battery connectors are fully engaged.

Weak battery. Allow the battery to recharge for 24 hours. Then, perform a self-test. If the

problem persists after recharging, replace the battery.

Failure of a battery self-test. The UPS emits short beeps for one minute and the Replace Battery LED

illuminates. The UPS repeats the alarm every five hours. Perform the self-test

procedure after the battery has charged for 24 hours to confirm the Replace

Battery condition. The alarm stops and the LED clears if the battery passes the

Sep 09, 2011 | APC Smart-UPS RT 5000VA (SURTD5000XLI) UPS...

1 Answer

I am looking for the A/C fuse for a Ford mustang gt 2002

manual system

  • Blown fuse(s):
  • Battery junction box (BJB) F26 (65A).
  • Central junction box (CJB) F33 (20A), F36 (7.5A), F37 (10A), F39 (20A), F45 (15A), F47 (15A), F58 (10A) or F59 (7.5A).
  • Blower motor inoperative.
  • A/C compressor inoperative.
  • Disconnected electrical connectors.
  • Engine cooling fan inoperative.
  • Damaged control switch(es) or climate control panel.
  • Circuitry open or shorted.

Electronic Automatic Temperature Control Module Self-Test
  • NOTE: The vehicle interior and exterior temperatures should be between 10° - 32.2°C (50° - 90°F) when carrying out the self-test. If the temperature is not within the specified range, false in-vehicle temperature sensor DTCs will be displayed.
    The EATC module self-test will detect concerns in the system control functions and will display hard diagnostic trouble codes (DTCs) in addition to continuous diagnostic trouble codes for concerns that occur during system operation.
  • The self-test can be initiated at any time. Normal operation of the system stops when the self-test is activated.
  • NOTE: The key must be in the RUN position to enter the self-test.
    To enter the self-test, press the OFF and floor position buttons simultaneously and then press the AUTOMATIC button within two seconds. The display will show a pulse tracer around the center of the display window. The test may run as long as 30 seconds. Record all DTCs displayed.
  • If any DTCs are retrieved during the self-test, proceed to Electronic Automatic Temperature Control (EATC) Module Diagnostic Trouble Code (DTC) Index.
  • If a condition exists but no DTCs are retrieved during the self-test, proceed to Symptom Chart.
  • To exit self-test and retain all continuous DTCs, push the blue (cooler) TEMP button. The module will exit self-test, retain all continuous DTCs and then turn off (display blank).
  • To exit the self-test and clear all DTCs, press the defrost button. The display will show 888 and all function symbols for one second. The module will then turn off (display blank) and all DTCs will be cleared.
  • Always exit the self-test before turning the EATC system off.
  • Continuous DTCs will be deleted after 80 ignition switch ON cycles after a continuous condition occurs.

Mar 28, 2011 | 2002 Ford Mustang

1 Answer

During reformat hp pavilion dv6-1251nr reboots and the screen goes blank, har drive seek light goes out

Shut down the computer.
Turn on the computer tapping F10 key on your keyboard.
You will see BIOS comming up.
Go to the option SMART and Run HDD Self Test.
If it passes then get another set of recovery disk for HP Pavilion.
If test fails, replace hard drive.

Dec 02, 2010 | HP Pavilion dv5-1251nr Notebook

1 Answer

My T23 has been wiped clean, all I get is a flashing bar. What do I do? PLEASE HELP!!!!!!

Go into the BIOS.

Instructions : Keep tapping on the F10 As soon as you push the power button. You might get a screen saying BIOS and also a dialog message saying that save configuration changes . Choose no and press enter. THe mouse does not work on the screen. use the direction keys on the keyboard. Choose diagnostics which would be on the top right corner. See the primary hard drive self test. Do the test. See if it passes or fails. If failed please replace hard drive. If it passes . Then we can try reinstallin the OS.

Hope you have the recovery cds.

Feb 14, 2010 | IBM ThinkPad T23 2647 Notebook

1 Answer

My HP 15C calculator recently developed a problem with the number pad being unresponsive. Calculator appears to pass the self test, however, the key pad test does not work at all. Suggestions for repair?

If the keyboard test fails the calculator should be sent for repairs. One shop in Pennsylvania repairs most models, except the newer ones. The URL is Best of luck!

Dec 28, 2009 | HP 12c Calculator

1 Answer

HP Digital Camera R717 Charging Flash Error

Try to run self-diagnostics test - press flash button while switching the camera on. One of them tests the flash functionality.

Nov 29, 2009 | HP Photosmart R717 Digital Camera

1 Answer


Try to run self-diagnostics tests - press flash button, while turning on the camera. One of the tests checks the flash functionality.

Nov 28, 2009 | HP Photosmart R707 Digital Camera

1 Answer

The camera turns on and takes pictures but the flash doesn't work. I saw the number 403 on the screen when I was trying to figure out the problem.

Try to run self-diagnostics tests - press flash button while switching on the camera. One of the tests verifies the flash functionality.

Oct 25, 2009 | HP Photosmart R707 Digital Camera

1 Answer

Printer flashes self test




Mar 07, 2009 | HP PSC 2175 All-In-One InkJet Printer

Not finding what you are looking for?
HP 12c Calculator Logo

Related Topics:

524 people viewed this question

Ask a Question

Usually answered in minutes!

Top HP Office Equipment & Supplies Experts

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers


Level 3 Expert

1089 Answers


Level 3 Expert

102366 Answers

Are you a HP Office Equipment and Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides