Question about Vizio L32 32 in. LCD HDTV

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Vizio 42" LCD - Random appearance of small black rectangles

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? same problem with the random black squares, only on a vizio 32" LCD
used to happen only on 1 or 2 channels, but lately it occurs on local stations and with more frequency, although changing channels (up or down), then back usually corrects the problem- for 5-10 minutes.
Other nights it never occurs, totally random!

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  • Anonymous Mar 26, 2014

    Alba 26880 changes channels randomly by itself

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  • Vizio Master
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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.

Jerry G.

Posted on Jan 02, 2009

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