Vertical Collapse
 Even though this is a horizontal line, the problem is actually in the vertical circuit. This problem is a major repair, but it is one of the least expensive circuits to repair in most cases. 

It is rare that this "just happens suddenly"! Usually the first symptom of this
is when the top of the picture gets lines in it, or intermittently drops down a half-inch or more when cold. After warm-up the symptoms appear to go away. The problem is still there, and in fact is damaging components. Don't rush and get a shop involved yet though. As long is it is intermittent there is not much a shop can do. When it takes several minutes for the top-dropping-down symptom to go away is when to call a technician. There is one exception to this - if by "tapping" on the TV the symptoms go away (or can be duplicated) you may have a simple loose connection problem.

Related Links: Picture Stretches


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