The problem maybe as simple as needing to change your input setting on your TV. To do this locate the input button your remote or TV and cycle through to see if you pick up a signal. If this does not work you may need to call Comcast and ask to have your wiring checked something could have damaged the wires.
broken turn signal switch assemblyreplace it
If the turn signal light keeps burning out on an E320, it is likely moisture related. It is likely that a seal is leaking.
it needs to be replaced
There is a short in the wires in the turn signal circuit. The combination switch in the steering column is a good place to check. Do the hazard lights still flash?
Check or replace the socket
Usually when ones turn signal is blinking fast its telling you that a turn signal bulb (and in some cases a brake light bulb) is out. If it blinks fast when you turn on the the left signal the burnt out bulb is on that side of the vehicle (could be front or rear bulb so you'll have to check). And vice versa
usually if it is flashing faster, that is your cars way of telling you that a bulb is burned out
You have a broken spring in the steering column
I have a turn signal light that keeps flashing regardless of the control arm position. I think that the problem is in the turn signal control relay but I don't know where it is located. I did find the 3 prong relay located behind the center console but this is not the problem because I replaced it and have the same problem.
You probably have a short in one of the light assemblies, turn signal lever, or the wiring.
Turn signal indicators are lights. The flash to tell you, or indicate, that a turn signal is on, and which way the lights are flashing.
Chances are good that the left turn auto return paw inside the steering columb is broken. If the turn signal handle doesnt automaticly return when you complete a left hand turn using the signal indicator before you start the turn then that sounds like that's the problem. Time to hit the shop.