I have multiple TV's in the house.. they all are fine except one TV in the master bedroom. It was working fine until Saturday. Now it is snowy.

I did replace the TV, however I checked the plug with the old TV that was there and that TV is snowy as well. I have replaced the cable. I have removed the entire plug from the wall and checked that as well. I removed the connection from the splitter and fed it directly into the main feed - still snowy. I am at a loss. At one point it cleared itself up. But now it wont clear up anymore. Every other TV in the house is fine.

Very weird.. any clues?

Sometimes the connector is not properlly installed. Check the connector. The braid can touch the conductor and cause this. The best type of F connector is a compression connector and not a crimp. If you can pull the connector off by hand , its not right. Hope this helps

Ok the mystery is over - but it is very odd. Couple things.. Im dead tired from moving this heavy TV around to different jacks. LOL.. TV was fine.. it was the jack.

Cable guy came over.. verified that the signal was very very low in this TV jack. Even though it worked 2 days ago. He took the cable out of the wall and recrimped it. Also recrimped the wire to the TV - voila! everything worked.

How in the world a static wire like coax cable that just sits in the wall gets messed up is beyond me. He was a little stumped as well, but at least it wasn't the wire going all the way to the basement that was bad. I would have thrown the TV through the window if that happened. :-)

Glad to hear you got it figured out. Coax connectors can go bad at any time even after working fine for years. Its all in how they were orginially made up.:D