Why did my TV display just a black screen?
During the night, the video froze and there was no sound. The cable box looked okay displaying the time, so there was no hardware upgrade in progress. I changed the channel several times and it just displayed a blank screen, but it did show the channel number and name at the bottom of the screen. I called in the problem and was sent a "corrective signal" which didn't fix the problem. Then a signal was sent to re-boot the box. After that, it was corrected. What might the problem have been?