My HD channels come in great until I select the FX channel and a couple others. They break up and then go grey. Sometimes going in and out. When I change the channel it comes in clear, then back to channel that breaks up only to break up and go blank again.
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Re: Loss of connection on certain HD channels
If you are using a cable box, the TV can't be the trouble since it is always staying on the same channel. You pick your channels through the box. You'll need to contact your cable provider and describe the trouble you are having. It might be a problem in their box or transmission line.
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Your TV is not at fault, it is showing you the difference between HD and non HD channels. HD TV's work great with HD scorces but don't usually look that great with standard definition, Also the non-HD channels are more likely to be heavily compressed which makes them look bad too.
In order to get any of the Freesat channels, you need to connect a Satellite dish to your TV. If you have a Sky dish, you simply need to run an extra Cable from the LNB from the dish and connect to your socket on the back of your TV.
In order to get Freeview channels and Analogue channels, you need to connect a aerial to the back of the TV.
There is a menu option for the TV to start straight to the AV input (your Sky HD box). It is Menu > Setup > Other Settings > Power on Preference. Select 'AV' for your TV to start on Sky HD.
Also even if you have your TV to start on TV, when you turn on your Sky HD box, it should automatically switch to the Sky box.
What kind of antenna is used. Outdoor antenna or indoor antenna. The main board only detect the signal with certain level, if the signal strength is not enough, it will pass by. Since the change of signal from analog to digital this problem got more depending on your location. You need to use a booster-antenna to over come this problem.
I had the exact same problem on a brand new Insignia 26 " LCD with DVD. Comcast tech was able to fix it by changing the Comcast box diagnostics. Here is what he did. Using the Comcast remote with the TV on - press power, cable, menu in that order. A comcast diagnostic srceen will appear. Select Additional HDMI options, then audio options. Change the audio options to L-PCM. Press power again to exit the diagnostics. That will fix it and you get to use the HDMI cable.
Okay,i assumed this is what you have: HD cable box with HDMI cable connection to the Samsung TV. Listen careful as follow: First you want to make sure using the same HD comcast box with HDMI connection for our Samsung TV as well as your other TV.Be sure the other TV do received the missing channels from the Samsung TV.You must be SURE you have tested both TVs with the same HDMI cable with the SAME HD cable box. Now that you have confirmed the both TVS are using the same HD comcast box and the same HDMI cable but the connection that goes to the Samsung TV are missing some channels,at this point,use another HDMI connection behind your Samsung TV and see if you have the same problem.If so,please also try the left side of the HDMI connection and see if you could get the other channels. Let me know! solutiondoct
Fortunately, I have not had the fuzzy green screen problem in quite awile, and since getting the Dish, I have not had to worry about channel memory loss. I am thinking about turning this one into a computer monitor...is this even possible... and getting a bigger tv for the front room, HD of course.