It’s happened to me many times: The kids and I are watching TV. The screen blinks once, twice, then goes blue. I begin to suspect there’s something wrong again with the lines! So I call our cable provider. They tell me there are no ongoing connection issues, or other line works being done in my area. Hmmm… I tinker with the cables connected to the back of the TV a bit. For a moment the TV blinks back to life. Aha! I knew it – the cable connector, something that looks like the Cat5e Keystone jack, has come loose. I do just a few more tightening… And we’re back on air!