A technical report is one the agents' send to the engineers so that the engineers can try to find the source of the problem and fix it. To do this, they often have to compile multiple reports to find the cause of the issue. It could be software causing it, it could be data encoded in the broadcast, etc. Sometimes, it takes a few calls to find the cause of these gremlins. There's not any real troubleshooting steps beyond a basic "missing/incomplete recording" troubleshooting and that usually won't identify why a primetime recording will complete but a late night won't.
Some other tests you can do to help id the cause: Put the receiver in single mode if in dual mode or vice/versa. Disable OTA locals completely by removing the antenna in and then deleting the OTA locals in menu,6,9. This way you can try to find a setting that is causing the receiver to act unintended.