Question about Schiller Welch Allyn Cardiovit At 2 Interpretive Ekg Machine

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My screen is too dark to read. it's charged, so that's not the problem.

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While the unit is on press the up arrow until it is a readable contrast

Posted on Dec 20, 2010

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1 Answer

Screen dark


dark?? as in, it wont turn on??

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Cannot read screen - screen dark nocnotrast just


To adjust the contrast, turn the calculator on. Press and release the 2ND key. Press and hold the Up-arrow to increase or the Down-arrow to decrease the contrast.

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Charger makes my screen dark


GO into the control panel and check your power settings. You might have it set to use less power when plugged in.

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I have a similar problem.


Actually it sounds like the phone is merely off. Perhaps the battery actually died. If so and then the phone is off. When you plug in the phone with while it is off it will show the logo then it will say please wait and the the battery icon and say charging. If the phone is charged it goes dark.

Just hold down the "end call" key for a minute and see.

This actually happened to me once. I thought my phone was broken. Just as I was about to call AT&T I decided to try turning it off which is done the same way as you turn it on. Imagine my surprise when it started right up!!!

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Battery or Screen problem


Solution? - not sure yet but having read solution by Hector_ahab, tried various F() buttons in conjunction with Fn button. Pressing Fn with F6 switches between black and normal screen on my Acer Aspire 5920. Fingers crossed!

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Garmin etrex screen too dim to read


I have an older Garmin 12XL and suddenly the screen turned very dark. I tried replacing the batteries and let the GPS rest for a week so the internal lithium battery could re-charge. But that did not work. I just got an email from a friend who had the same problem... it turned out that his unit had changed the screen contrast setting all by its' self.
This may not be the cause of your problem but it's worth trying... go into your "Settings" menu and reset the contrast and see if that cures the problem. Good luck.

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1 Answer

Green Lines


NO CALLS NEEDED TO AN EXPERT. THEY WILL CHARGE YOU FOR LITTLE ADJUSTMENT YOU CAN DO YOURSELF.
READ THE WEBSITE BELOW AND MAKE ADJUSTMENT TO THE SCREEN VOLTAGES TO CLEAR SCREEN, BUT DO IT SLOWLY. IT SHOULD CLEAR THE PROBLEM.

http://www.somelifeblog.com/2007/06/sony-projection-tv-red-line-repair.html

PRIDAH

Nov 13, 2007 | Sony KP-57WS500 57" Rear Projection...

3 Answers

TI 85 Screen is too dark


Press the 2nd key and the down arrow to lighten the screen.

Oct 06, 2007 | Texas Instruments TI-85 Calculator

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