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The batteries corroded and now it won’t turn on even with new batteries. I tried to clean it but I didn’t really know what to do,

ramseyclan2 , Use the links below to see how to clean corrosion off of battery contacts. If not really bad, I use an ink eraser on a pen (slightly abrasive) to clean and then blow out dust/debri with canned compressed air. Last link will show how to remove back in case you have to dig a little deeper. Good luck. I hope this helped you out, if so let me know by pressing the helpful button. http://cleaning.lovetoknow.com/Clean_Alkhttp://www.howtocleanstuff.net/how-to-clhttps://www.youtube.com/watch?v=oSWVSX66… Texas Instruments TI-83 Plus Back Case Replacement