Question about Vizio GV42L 42 in. LCD Television
Small black rectangles randomly appear on my screen. Sometimes turning tv off and back on gets rid of them, sometimes it doesn't. They can appear anywhere on the screen. Sometimes it's 1, sometimes it's 3 or 4. ANy ideas?
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.
Posted on Nov 09, 2008
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Posted on Jan 02, 2017
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.
Posted on Jan 02, 2009
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