HP 12c Calculator "fix black spot" Questions

Fix black circular spot in middle of display on my TI-85 graphing calculator. It was in storage for about 5 years and went found and tried to turn it on an irregular oval like black spot in middle ...

...black spot screen. Is there anyway I can get it fix? Any local agent in Chandler, AZ that I can go? Pls help. Hi I fix all the TI calculators but i am in NY its very hard to find parts for this model ...

...black spots everywhere. Is there anyway to fix this? The liquid crystal of the LCD is probably oozing inside the calculator. I don't believe it is worth fixing. It will probably cost a lot more than ...

...black clouded spot that is there whether my calculator is on or off. I tried adjusting the contrast with 2nd->up arrow/down arrow and that didn't help it and replacing the batteries didn't make a ...

Also be careful to not rub off any off the black key contact spots where the keys touch it. Put it back together loosely and see if it works. Hope Ya Fix It! How do I get rid of the "C" on the screen