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Re: bad picture on some channels
Hi, Sounds like the splitter that allows the cable to go to other tvs might have a problem or there is an old filter somewhere that needs to be removed. Check the splitters and make sure they are the right type and you don't have one that says "in" and out to UHF of VHF but tv 1 tv 2 ect and that if it says anything about band like 800 or 900. If you need further help let me know what these splitters have printed on them. Good Luck!
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Cocast may have only transmitting NTSC Ch 2~13 only for your area, to get more channel you may have to use Comcast cable box, I am in bay area, I can get 2~35 for basic plus service, I can get 2~13 for the most simple service for less money. What is your serivce level you are paying for?
Your TV also anly has NTSC tuner, there is no QAM or ATSC turner.
TV SPEC; http://reviews.cnet.com/flat-panel-tvs/proscan-26lb30qd/4507-6482_7-33403393.html
You may have to call Comcast.
If this TV is connected to cable TV and you are using a cable box then the cable system is at fault. If you are connected to cable TV with no cable box then look at the pictures on other TV's in your home if you have another TV. If they look fine and are small enough to move around. Move the TV and connect it to the cable outlet where this TV is connected and then examine those channels again. If they are grainy then a call to the cable company is due. They can use a signal checker to see what the signal levels are at that outlet for any given channel range.
You could try moving it to the other room to see if the connection is bad. Better than taking to the store just yet. If the picture is still bad at both connections I would just bite the bullet and take it back and exchange it while its free. Hope this helps and let me know if you need more ideas.
Depending on your cable provider, some of the HD channels may be present. If so, these are ususally located in the upper channel numbers. It sounds like you are receiving some of the HD lineup. A cable box will probably allow you to view more HD channels including the premium HD channels if you subscribe to them.
You should not be noticing a delay with the HD channels only. If this is what you are experiencing without a cable box, then it would be an issue with the HD tuner built into your TV set. LG customer service can let you know if there are any software updates available for yourmodel that can resolve this. Additionally, if you are getting your sound from an Home Theater system then you will notice an echo if using the TV's built in speakers at the same time. This is sometimes mistaken as an audio delay. If you are using a home theater system, be sure to disable the speakers that are built into your system.
Normally grainy pictures are a result of poor ground connections, although usually for more than one channel. Check the cable connections first. Otherwise all I can suggest is to have the tuner replaced.
In order to receive true high definition television, you will need a high definition cable box. Basic channels are going to look more grainy and not as clear overall even with an HD box, however you won't be able to view or decode the actual HD channels without a box.
In addtion, what type of cables are you using to hook up your existing box? This can have a substantial impact on the picture you see.
Tis is an ongoing problem I seen increase alot over the past few months. From what I can gather, all the channels being broadcast over going from the analog to digital, there's no big suprise to anyone. However, the change from analog to digital is changing at a faster rate, so when you look at the TV some channels will be fine and others will have grey lines, fuzzy picture. The only solution-you need a TV with some kind of digital tuner. On the TV itself if the (TV has one) it will say "SD" or "ED" which stands for standard digital or enhanced digital.