Was having problems this morning. The GFCI protected circuit my tv and DirectTV sat receiver is on, started faulting. TV goes off, reset the outlet, everything starts up, about 30 mins later the the circuit faults again. Repeat...

Then I notice, before the fault happens, the Dtv receiver is acting strange. Playing fine one moment, the next, I'm hearing audio from another channel, and sometimes seeing the other channel too. Then the fault happens again.

So now I'm thinking there has to be a connection between the observed symptoms. On this circuit, there is a power inserter (PI-28) which provides power over coax to the DTV SWM module.

That module switches the receiver between different outputs from the dish. So if it is working poorly, you could see the channel mysteriously change.

So after unplugging the PI, bypassing the SWM & loosing the ability to watch one record one, the GFCI isn't tripping any more.

Seems like it's time for a new power inserter.