Question about Texas Instruments TI-85 Calculator

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When calculator is turned on, the work area is colored with dark blue pixels that inhibit the visibility of the work being performed. Is this a backlighting problem, and how can it be corrected?

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This seems to be a problem with the display (screen)
the only solution to fix this is to get the screen replaced.

Posted on Aug 06, 2010

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My HP 48GX just displays a black (all pixel) display screen with one vertical stripe down the middle. I tried reset button and now it displays 2 vertical stripes (the new one divides the right half in...


I just had this exact problem so I reset the memory as instructed below. Know I am back in business. Memory reset A memory reset will return the HP 48 to its factory-default state, which will erase all stored user memory. Use this feature very carefully.
  1. If necessary, turn the calculator on.
  2. Press and hold the ON+A+F keys simultaneously.
  3. Release all three keys at the same time. This should cause the calculator to display the message "Try to recover memory?"
  4. Press the A key to attempt to recover memory or the F key to erase the user memory. When A is pressed, occasionally the objects in memory are recovered in new sub-directories of HOME labeled D.01, D.02, et cetera, although there is no guarantee that all of the variables will be recovered. Pressing the F key will cause all information stored by the user to be erased from calculator memory. This will also affect any RAM card that is merged with main memory. If the card is not merged or it is write-protected, it will not be affected by this reset.
Hardware symptoms and solutions I. The display screen has a blue/purple blotch of color, even when the unit is off The screen is damaged, and the calculator requires service. Please contact HP . II. All of the pixels on the screen are lit (blue)
  1. Try to adjust the contrast by holding down the ON key and repeatedly pressing the [ - ] key.
  2. If the screen is still dark, try to halt the system using the keyboard.
  3. If this does not correct the problem, try to reset the system using the reset hole with the batteries removed.
  4. If this does not work, remove the batteries and let the unit sit for 48 hours. After 48 hours, replace the batteries. If the problem persists, attempt a memory reset. Although removing the batteries for 48 hours should erase the user memory, performing a memory reset will ensure that the calculator is reset to its factory defaults.
  5. If the problem persists, the unit requires service. Please contact HP .

Dec 30, 2010 | HP 48gx Calculator

1 Answer

Ambient air sensor location


The air temperature switch that the vehicle's computer uses to calculate for fuel mixture is in the air cleaner housing. I see it having 4 wire on a diesel engine it and the wiring color is different for manual and automatic transmissions, If you tell me if the truck is manual or auto trans and 2WD or 4wd I can tell you the colors of the wires to look for but first see if it accidentally got disconnected. A gasoline engine has a two wire sensor in the intake duct or air filter housing the wires on this two wire sensor are dark blue/dark green and the other wire is dark blue/ light green.
The ambient air temperature switch for temperature control and outside temperature display is located between the drivers headlight area and radiator, the colors of the wires on the sensor are violet/light green and dark blue/dark green again ensure it is plugged in

Dec 04, 2010 | 1992 Dodge Dakota

1 Answer

My TI-84 Plus Silver Edition Calculator is missing pixels or lines in the middle of the screen. If I press 2nd then + sign, i get menu to reset, but three lines are not visible. This happens in the...


this happand when you dont use the Calculator long time
try the 2nd and Arrow up make the screen dark for 15 to 30 min
keep puse any key until will pass the 30 min
if it will not help than it could be the screen or the connection on the mainboard

Oct 13, 2010 | Texas Instruments TI-84 Plus Silver...

1 Answer

When I turn on my calculator, every pixel on the screen is dark?


try pressing 2nd-> "up arrow" to adjust the contrast, keep doing it and it may solve ur problem

Sep 29, 2008 | Texas Instruments TI-84 Plus Calculator

1 Answer

Black color on photos greyish looking and pixelated


Please check the Printer Setting Preference in for Best print.

And also try to work out with a new Cartridge. Let me know if the problem still persists.

Regards
Ellin

Sep 25, 2008 | Canon PIXMA iP4000 InkJet Photo Printer

1 Answer

Toshiba regza lcd 46x3500


This is what is known as a dead pixel. If you have a standard wide screen lcd monitor it has over 1 million pixels. It is not super un-common for one to go bad. It will either always be dark or in your case always be lit. It is not worth it to repair, and in most cases unless you have multiple dead pixels with in a square inch of screen, it is not covered under warranty either.
Each pixel is individual and the problem will most likely not spread.

Jul 08, 2008 | Televison & Video

1 Answer

"Finger Print" sized shaded area on screen


A shaded or dark spot on the screen is usually a bad pixel area and is caused by being hit or pressed to hard in that area. It could also be that the liquid crystal (LC in the LCD) in that area has become stagnant, try rubbing the area and around the area pressing firmly, just enough to see a color change in the screen area, but not too hard that the area turns black. Rubbing the area will move the liquid crystal around and sometimes refreshes a darkened area. If rubbing doesn't work, then it's a bad pixel area, and will eventually become a dead pixel area with time.

Jul 04, 2008 | Acer Aspire 5050-3242 Notebook

1 Answer

Dead Pixels?


I've heard that if you press on the dead pixels with your finger for a few seconds, sometimes they go away. I've also heard if you get a damp cloth, turn the screen off, press it on the dead pixels, turn the thing on, and remove the cloth, they might also go away.

Aug 09, 2007 | Texas Instruments TI-83 Plus Calculator

1 Answer

Ultrazoom pixellation problems


No, it isn't to do with white balance. Instead it is due to a combination of noise swamping (or at least modifying significantly) the exposure measured by the pixel, and the interpolation algorithm in the sensor processing chips that "guesses" the colour of a pixel based on the readings from nearby pixels. These algorithms are better at rendering certain kinds of image elements than others. Large areas of darkish colour often fool the algorithms into attempting to produce detail that doesn't exist.

Sep 13, 2005 | Olympus Camedia C-740 Ultra Zoom Digital...

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