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Default Pioneer Projection TV - Sine wave red convergence line.

I just inherited at Pioneer PTV. When I turn it on, the TV has bright
red short horizontal lines at some fixed regions on the screen.However
The picture color appears fine and reasonably balanced.
When I try to set the convergence, the red, blue and green lines are
aligned with an additional curved red horizontal line (in the form of a
sine wave - not curved) running parallel to the convergence line.

Is the red tube going. if not can someone point me to which circuit is
the problem.

Thanks in advance

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