Maybe this thing is getting old; but it often causes the TV sound to produce clicky sounds and the TV video to become patchy during these periods. Problem originally appeared only during stormy weather---now it does it couple times per minute and on all channels. Signal seems OK (91-93 strength).
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There are a lot of possibilities, so let's get rid of some:
1) Try to unplug (wait 5~10 seconds.) and then plug back in your TV, and any other equipment you may have hooked up to it. If you have switched video on your Home Entertainment center, a relay or switch might be stuck open. UNplugging everything and plugging it back in may clear that problem. (Turning it "On & Off" is not the same!)
2) Is your TV in the correct mode? If it is in PC or DVI mode when it should be in Cable TV mode, that can be problematic. (Also check game ports, etc. and verify they are not selected.)
3) IS your TV old enough to have a high voltage problem? Typically sound is from the low voltage part of the TV receiver, and on older TV's things like High Voltage rectifiers and flyback transformers get involved. If this is a possibility, replace the set. In the long run you'll be happier, ,even if it is inconvenient as $#@! to pay for a new one.
4) can you post the make and model just to help us figure it out?
Hi jenmoore945, my name is Mike Houston a Social Media Representative at DISH. I know it can be frustrating when the receiver has a popping sound when changing the channel. Try unplugging the receiver for 10 seconds and plug it back in. Allow the receiver to reacquire the signal and download the guide, check to see if you still hear the pops when changing the channel.
Sounds like your SNR is getting too high and causing the signal to overload. A few things can cause this a bad splitter that causes the signal to bleed and introduces noise, or a more common issue is having a weak signal coming from the cable provider and once it goes through a splitter it causes the signal to become to weak to be stable.
Since it sounds like your cable has been working up until recently, you may have had a cable or splitter go bad.
Call comcast and have a technician come out and test the line.
Plug the TV to an open channel on your receiver via this output: *Rear, 1 x Digital audio output (coaxial) ( TOSLINK ) This will look like a single RCA output plug. Set that input channel on your receiver to some sort of virtual surround mode because it doesn't look like your HDTV has a decoder in it (meaning it will come out stereo and the receiver will have to fake it). Turn the volume all the way down on the TV and use the receiver to control TV volume just as you do with DVDs.
*Substitute this with the digital audio output on your set top box if you are sending video only to the TV from the set top box (component, DVI or s-video connections). So video goes to the TV, audio to the receiver.
Sounds like you lost your video. Causes could be a vodeo switching IC, a PIP module if the set has PIP Or a fault in the video jungle IC. To fix this problem I would highly recomend you take the set to a trained service person, as there are safety issues to deal with , as these sets hold alot of hi voltage even after the sets unplugged. Better safe then sorry. Good Luck