I have x-10 on my main TV screen and cannot get any stations other than Netflix etc and all other TV's are working fine?

It could be a bad power supply for your TV and the power supply is going bad. It would be more cheaper to buy a new TV than to try and repair the TV that you have is broken.

That is caused by poor signal

check internet connection

You should have a cable service account, they give you the access code

But is your TV a "Smart TV"? That means does the TV connect to the internet. Just because you have Comcast connected to your TV doesn't mean it is getting an internet signal. The black coax to the TV only carries a TV signal.
To get internet service to your TV first you have to determine if it is capable. If it does have a wireless receiver in it, you will have to configure it to attach to your wireless base station. If it doesn't have a wireless adapter you will have to connect a network cable from the base station into the TV and then configure it to work with your network. Once you have that internet signal working on your TV you will be able to use Netflix on your TV.

First check with Sony to see if there may possibly be a software update.

Learn to program your tv inputs

Reset your Netflix for the Samsung set. It will require you to go to settings and reset the enabling code. Simply follow the Netflix reinstallation process for establishing internet connection.

Press the TIVO button. This should return you to the main screen. If this doesn't work, the box is most likely hung up. Unpolug the power cord, count to 10 and plug it back in. It will take a few minutes to boot back up, but this should fix the problem.

• screen blanking is activated