[header] How to fix cable tv [title] Turn off then turn on your device. [step] It is possible that your dvr or cable box may have malfunctioned and requires a power cycle. On the device itself hold the power button for ten seconds to shut it off. 
It it continues to not turn off, you can unplug the power cord from the power outlet for 15 seconds then plug back in and wait 30 seconds. Press the power button to turn the device back on.