We have a Motorola Cable Box (supplied by Shaw Cable), and on our Non-True HD Channels a border appears on each side of our Screen (happens to all customers using the Motorola Cable Box). The borders have created a red vertical burn line on our screen. A technician told us that the only way to avoid this from happening in the future is to change our picture setting each time we view a Non-True HD Channel (which is a pain in the ****). If we put our picture setting at 'full screen' it will not hold because the Motorola Cable Box reverts it back once we switch channels. Thank gawd we have a 3 year extended warranty and will receive a replacement/new television. Do you know of any way we can permanently set our television to hold a 'full screen' picture setting which won't be reverted back due to the Motorola Cable Box? Also, do you know what the cost of a replacement flat panel screen is? The technician figured it was around $800.00 Canadian.
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Check the main filter capacitors at its power regulator board. Replace if found bulged or damaged. Replace all secondary side supply rails' filter capacitors too. The fault is with damaged electrolytic capacitors at the power regulator board itself.
No HD channels on a DCT700, you have to have a HD capable box from comcast. Usually $8.95 a month for box rental. Don't know a lot about DVD players. If you get a comcast HD box, and have an HD TV, you should use an HDMI cable for best picture. Second choice is component cables. Those are the red, white and yellow or red, white yellow, blue and green cables.
I have a Vizio. If I use the HDMI input I can only get normal and zoom w/ picture buttom on the remote but get full picture on all cable supplied HD channels but not on none HD channels. However, if I switch cable input, I have the TV set up with both inputs from the converter box, I am able to have the options of normal,panoramic,wide and zoom on all non HD channels. I don;t like the black bars top and bottom of the HD channels with this imput mode so I switch back to HDMI. Maybe your TV is simmilar.
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.
We had the same thing happen to us on the right-hand side. A technician told us yesterday that the Motorola Cable Box (supplied by Shaw Cable) places a border on Non-True HD Channels. Because we didn't place our picture setting to 'full-screen' each time we viewed these channels and burn line was created. He gestimated a replacement screen runs about $800.00 Canadian, but we have a 3 year extended warranty and will receive a new TV. He also said it happens on all big screen tv's that use a cable box creating borders on Non-True HD Channels.