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Grainy picture... not on regular TV

280 Views 6 Replies 4 Participants Last post by walford, Oct 24, 2004

crzygrndpa

Discussion Starter · Oct 24, 2004

Hey,

I posted a previous topic about getting a grainy picture on lower channels. I believed it was a wiring issue... but I hooked up a regular TV to the same cable outlet I have my HDTV on and the picture comes in perfectly fine.

Is this an issue with my TV? I am not stretching the image, and this is having the cable go straight into the TV, no cable box. It looks as if I was using an antenna and getting poor reception... but it is cable and works perfectly fine on my regular tube TV. Any thoughts?

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Joxer

· #2 · Oct 24, 2004

Try reducing the sharpness setting and turn off any SVM on the HD set.

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crzygrndpa

Discussion Starter · #3 · Oct 24, 2004

But if that were the case why is it that the higher channels are coming in just fine?

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bfdtv

· #4 · Oct 24, 2004

Lower channels are more subject to interference than higher channels.

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crzygrndpa

Discussion Starter · #5 · Oct 24, 2004

Is there a way to tell what type of interference there is and how to remove this? And if there is interference then why does this interference not appear on the regular TV?

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bfdtv

· #6 · Oct 24, 2004

What size is the regular TV? Are you comparing the picture on the same size television? Obviously, larger displays will magnify picture defects and make them more distracting.

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walford

· #7 · Oct 24, 2004

Also HDTV's with a higher then SD native resolution mode tend to magnify the interference when they upscale the resolution by creating aditional lines and pixels per line. Why the upscaling algoritnims tend to do this I do not know but I have seen it reported several times.

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