For the past 4-5 weeks We've been seeing intermittent picture breakup on HD and SD boxes on multiple channels. This random breakup on multiple Boxes on multiple RF paths in same house. This is Not being seen on internet speed bump or Pinplotter Ping change when logged..
Phone is not affected either when the pictures break up either.
Everything will be solid for 3-4 min, then picture will degrade to DCT Blocks for an instant, then it's perfect for 3-4 min more. HD, SD, channel No difference... We've watched SD and HD boxes do this seemingly at the same time. Same thing happens with On Demand playback.
I've checked the tightness of the RF Cabling everywhere. Nothing loose. I've power cycled boxes with no different in symptoms.
Please don't say that it's the TV's, as though HD TV's CAN Create DCT Blocks on their own, Analog SD TV's cannot create DCT Blocks, but the Boxes feeding them can. Both SD and HD Boxes are doing the same thing, and by my wife looking at HD in one room, and Me looking at SD to Analog TV in another room, it appears this is happening on multiple boxes simultaneously... which points to the feed, but it is not evident on Internet nor phone.
We have One HD Box and 3 SD to Channel RF 3/4 boxes. They are all doing this same thing.
I'm thinking there is either a random noise or very fast intermittent signal drop on the cable feed, but would like to be more certain prior to calling Comcast, as I doubt that they'll believe me...
I have shut off AC the rest of the house, and removing AC doesn't change it, nor does disconnecting RF from the individual boxes (and watching on other boxes)...
I'm wanting to measure the RF Feed to the boxes..... I seem to remember that there is a key combination that can be used to display the signal strength on HD boxes, but I've lost my notes as to what it that keystroke combination is.
Is there a simelar menu on the little SD box?
I'd be appreciative of this information if it could be passed along........
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Looking for 1939 Indian Motocycle
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