Update: Issue resolved! Samsung sent out a technician for the second time and I explained my theory that the TV is having a problem communicating with the universal remote to tell it what codes it should be using for the eternal devices. He agreed and decided to replace the IR sensor on the TV. Once he replaced the part and put the TV back together the universal remote started to work like it originally did with both my Xbox and cable box. I hope this helps anyone who is having the same issue and no other troubleshooting worked.
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