Question about Tech Solution TS-900 Calculator
I haven't used this in some time, so I replaced the battery and I cannot get the on/off button to work. It will only turn on when I press the AC key. When I do, no numbers will register on the display. It just stays as 0. What is not right here?
Make sure there is not a key stuck in the depressed state. If so try to pull it back up and you should be set. If the machine had a liquid spill this could cause that type of error too. In which case the machine is junk.
Posted on Jun 16, 2007
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How to Change the Brightness of the Display
To darken the display, press the yellow 2nd button and then press and hold down the Up-Arrow button located in the upper right section of the keypad. Release the Up-Arrow button when the display has reached the desired level of darkness.
To lighten the display, press the yellow 2nd button and then press and hold down the Down-Arrow button. Release the Down-Arrow button when the display has reached the desired level of lightness.
As you go through this process, a number will appear at the top right corner of the display. If this number is 7 or higher when your screen reaches the desired level of brightness, then your batteries are getting low and may need replacing soon. This number will be approximately 3 or 4 for new batteries.
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