Question about RCA D52W20 52" Rear Projection HDTV-Ready Television

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Picture Channels 2 to 7 plus 15 and 21 are snowy but no sound. All the other channels are fine. I plugged the cable line directly into the TV and same problem. Plug the same cable line into another TV and I get all the channels. I have tried everything in the menu. Any idea? Thanks

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Ther is a test you could do is you had the proper equipment, and that would be to inject a know good RF signal into the tunner F connector and chech tha point where the RF/IF is converted to audio and video, to determine if the proble is a bad tuner or not. The equipment is a VA62A Universal Video Analyzer. Its a great piece of equipment for this type of work. another thing you can do is get an RF Modulator from Radio shack and input a video and audio signal in to it and set it to channel 3 and connect the F connector to the TVs F connector. The set the TV to channel 3 you should see the picture and hear sound in channel 3. The VA62A is best because you can set it to emulate all of your channels from 1-87 standard TV and Cable TV. In any event a test needs to be run to see if the tunner is at fault.

Posted on Sep 08, 2007

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All channels are crystal clear except one that is snowy. I have cable.


One snowy channel can be caused by lots of issues, if it is on all tv's in your house, then there is a possibility that you have moisture in your "drop" line to the house or something is wrong in the trasmission lines to your home, but this will usually affect multiple channels in the same freqency range.

If it is only on 1 tv, then you may have a bad jumper cable from wall to tv, or vcr to tv ect.. you may have a bad connector on the feed cable or jumper cables, you may have a bad splitter partially blocking that frequency, or a bad "barrel" / wall plate partially blocking that frequency, the tuner in the tv may be going bad.

My advice is if it is only on 1 tv then move that tv to another room where the channel is fine... see if the problem follows the tv. if it does then you know you have a issue with the tv, if not then move another tv into the room with the problem and see if it still exists. If so start replacing jumper wires 1 by 1 making sure everything is hand tight.

If the problem is in the entire home, then i would locate the main cable input to your home on the outside of your home, dissconnect it from it's ground block / splitter and take a tv outside with an extention cord.. plug it directly into the tv.. if you still have the problem on that channel then you can call your cable company armed with that information. And have them send a tech out.

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The garbage on your unused channels are not important, just artifacts from signals not strong enough to produce a picture.
The 'blue screen' on #3 is what many sets use when they sense they are connected (terminated) to 'something' but not receiving any signal.

If sounds a lot like DTV's receiver took a hit.

If you have a second set you can borrow or drag to the receiver, try it first but I don't think it is your problem unless the cable input on it was zapped.

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