At random, and in random places, little black boxes appear on the screen. Sometimes there is only one; other times there are as many as ten. Changing channels doesn't help and neither does turning the TV off, waiting a few minutes, and then turning it back on. Sometimes it happens for several days in a row; other times we may go for a few weeks before we see them again.
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First thought would be to have a service call scheduled to check your signal at the TV. The cable co will meter it out. Some companies can do it via phone conversation. I would venture a solid guess that's your problem. Hope this helps. If you still have an issue, post a comment and I can help you troubleshoot further.
There is a processing fault that is starting to occure. What you are seeing is a type of aliasing. This can be in the main signal processing or in one of the control areas.
The set will require service. The service rep will test the set by using board substitution. There are typicaly a number of areas in the TV set that can cause this type of fault. Once the defective board is located the fault will be easy to service with a simple board swap and some adjustments.
If the set is out of warranty, it may be expensive to service. With many of the no-name brands, spare parts can be difficult or impossible to have.
I would check and see if you have the text option on under your closed captioning. With the new digital transition the signal for text captioning has been getting messed up during broadcast here lately. If it is on i would just shut it off or go to regular closed captioning.
This is a problem with closed-captioning. What you are seeing is a closed captioning box with no captioning in it. Usually this is being accidentally transmitted by the cable company "head end". Just make sure your closed captioning function is completely turned off. if you are seeing it randomly, it may well be coming from your cable company. Is it just on certain channels?
I HAVE THE SAME PROBLEM WITH MY SANYO TV THE CABLE GUY TOLD ME HE HAD AN OLDER SANYO TV TO THAT DID THE SAME THING AND HE TOLD ME WHEN THE BOX APPEARS JUST HIT THE VOL + OR - BUTTON AND IT WORKS ALTHOUGH ITS A PAIN IN THE YOU KNOW WHAT WONDER WALMART HAD A BIG SALE ON MY TV.
Sounds like a digital cable issue to me. Try connecting the cable directly to the TV bypassing the cable box and I bet that the issue will be gone. If so then contact your cable provider as the box or the incomming signal may be at falt.