Could be the power supply crapping out on the TA or your cable company sending out updates that it doesn't catch or complete the first time [possibly due to the power supply] and redoes it over and over ... If you can get a fresh wall wart from the cable company just for the TA, try that but they may want to change the whole TA
...of course check all the connections first: finger tightened coax cables and USB cable is in good condition, etc
...of course check all the connections first: finger tightened coax cables and USB cable is in good condition, etc