# Number 2 key not working

Well for starters I have a scientific calculator el-556g. The number 2 key doesn't work any more. I thought maybe the little keypad carbon was rubbing off or something. I opened it up poked around and then put it back together. still doesn't work. Any thoughts on what the problem could be -

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• Anonymous May 25, 2009

Number 8 does not work.
I observed this issue from time to time.

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Get a new calculator you stupid *****.

Posted on Jul 15, 2010

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Hi there,
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Posted on Jan 02, 2017

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To use the power, you use the y to the x key, above the EXP key. To enter 2 to the power of 4, you enter 2 hit the y to the x key and enter 4 and hit enter.

To use percent function, you enter the percent key after the number. To calculate Interest, where Interest = Principal x Interest x Time. For example, if the principal is \$1,000, the interest rate is 8%, and time/term is 4 years, we would enter 1000 x 8 Percent x 4. When the8 is entered followed by the percent key, it should turn into 0.08.

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Mmmm... it sounds like the calculator has been dropped or possibly gotten wet - maybe with something wet & sugary, which when it dries leaves behind a sugar deposit that won't allow enough electrical connection for the keys to work.

At this point, you've got very little to lose - if you suspect that it may have gotten wet, you could pull it apart (carefully) and rinse it out inside - very thoroughly - with distilled water, then let it dry for about a week before you put it back together.

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Try cleaning the keypad. Reset the calculator. When you press the EXP key or the 2ndF +EXP key try pressing firmly the calculator between your thumb and index (left hand).
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enter the approximate value of PI=3.14159265359 on your calculator and store it in one of the available memory locations. When you need use PI just recall the value to the display.
The EXP key is just a short cut for *10^(exponent). You can explicitly use the general power key.
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Are you entering any number before pressing the minus, add, multiply, or divide key? Those operations require two numbers; if you don't supply the first one then the calculator will supply the previous answer, which was zero.

For example, to add 2 and 3, press 2 + 3 = and you'll see 5. Now to add 4 to that, press + and the calculator will automatically supply the 5. Press 4 = and you'll see 9.

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You need to select the number of decimal places you would like, or if you would like the calculator to behave as normal. Press SET UP and select FSE (press 1) . You now have 5 options.
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I don't know about this specific calculator, but there is probably a button on your calculator that has a "y" with an "x" as a superscript (exponent). Or is could be reversed. But you wanted 2^8, you would push the 2 first, then the exponent button, then the 8, and there's your answer.

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Not knowing what to do, I tried anything that could possibly help:

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Marcello

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