The day will come when you will press the “Watch TV” button on your fancy remote control—or however it is that you turn your system on—and…nothing will happen. Or something will happen, but it won’t be the right thing. Generally the problem will boil down to you’ll be able to see it but not hear it or you’ll hear it but not see it. Before you panic and start spiraling down into a world of Apocalypse Now-level darkness, try these five simple troubleshooting tips. Chances are one of them will get you back on track before the first commercial break!