Proximity Sensor Possibly Broken..is there a fix?

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http://forum.xda-developers.com – I noticed that my screen doesnt turn off when I answer phone calls. I though it was a problem with the ROM I was running until I flashed a new one and found out it was there too. So I flashed to stock and unrooted via ODIN. The issue still exists. I turned off the lights in my room...no flashing of the proximity sensor and I tested it in the Galaxy S3's hidden menu...it read "Proximity 0.0 ADC; 0(0,0,0)" I was wondering if there is a possible fix that I could do, because I would really hate to have to return it to VZW. I had multiple replacements with my Nexus till finally the (HowTos)