pH meter fucked up?

My pH meter is reading all sorts of wild numbers... i left it out to dry under my light, i did not store it in calibration fluid, i just totally neglected it because i wasnt aware that i had to store it a certain way

what can i do to reverse this fucked up mess?

what kind is it? I have a oakton and a E2 came on the screen, so I had to get a new tip. I think it was about $60. always keep solution in the cap when not using. I found out the hard way too....

Do i need to store my PPM meter the same way???

here is the ph "Milwaukee pH 600" pocket meter

http://www.eseasongear.com/phtester.html

I have a bluelab ppm meter. dont have to leave in solution.if codes are coming up on your ph I would say your tip is bad.