Question about Sharp EL9900 Graphic Calculator

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My sharp el 9900 wont turn on even when i have replaced the batteries, any ideas?

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Posted on Jan 02, 2017

walesarumi
  • 6993 Answers

SOURCE: Sharp EL-9900 wont start after

Hi,

when you said it suddenly died, do you means after putting in new batteries,it did not turn on at all? If yes, below are some reasons for this problem;

Check the batter seat. I mean the position where the battery stays, look if you will find any rust of the battery terminal (metal). Rust can prevent the battery from contacting the unit, preventing it from receiving power. Get a flat screw driver, scratch the rust off, fix the battery back in and try again.

If there is no rust, then there is probably some disconnection inside the unit. This can be between the battery terminal and the board. Get a screw driver and remove all the screw. Take the unit apart and check for any lose contact between the battery terminal and the board.

I hope the above makes sense to you.......

Regards.

Posted on Apr 14, 2011

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when you said it suddenly died, do you means after putting in new batteries,it did not turn on at all? If yes, below are some reasons for this problem;

Check the batter seat. I mean the position where the battery stays, look if you will find any rust of the battery terminal (metal). Rust can prevent the battery from contacting the unit, preventing it from receiving power. Get a flat screw driver, scratch the rust off, fix the battery back in and try again.

If there is no rust, then there is probably some disconnection inside the unit. This can be between the battery terminal and the board. Get a screw driver and remove all the screw. Take the unit apart and check for any lose contact between the battery terminal and the board.

I hope the above makes sense to you.......

Regards.

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