Why won't my replacement optical drive grab the disc?
When my April, 2008 20 inch 2.66 iMac's optical drive failed, I swapped it myself (out of warranty). I could have sworn that the original drive was a UJ-875. I installed a Panasonic UJ-875 and it fit perfectly in the drive bay bracket. Inserting discs, however, is a problem now because the drive fails to "grab" the disc and pull it in. The disc vanishes inside the iMac's aluminum bezel and requires a final push using a pen tip or credit card to trigger the "grab." What to do?! Note: I've now installed a Panasonic UJ-225 Blu-ray drive and have encountered the same problem. Help! Thanks.
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