Texas Instruments TI-83/84/Silver Graphing Calculator Lot of 6 FPOR Parts

Lot of 6 total Texas instrument calculators. All tested and not working in current shape. Could be slight issues with easy fix or could be fully broken. I am unsure on how to fix them so selling as is, for parts or repair (fpor) X1 ti84 plus silver does not turn on X1 ti84 plus silver (silver and black) does not turn on X1 ti84 plus silver (silver and pink) does not turn on and dark spots on screen X1ti84 plus does not turn on X1 ti83 does not turn on X1 ti83 plus with case does not turn on and dark spots/dead pixels on screen Please see photos for best descriptions on details. Not all have battery covers and only 1 of the 83 s have a case as shown Feel free to ask any questions