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Thank you for the additional information.
The straight line across the middle of the TV indicates the absence of vertical deflection.
There are a couple of possibilities including the deflection yoke and the vertical drive circuit. The most common fault is the vertical drive circuit consisting of an Integrated Circuit and filter components.
An experienced technician can repair the circuit board for approximately $85.00-$105.00 on a walk-in basis.
If you are in need of a repair person, please visit TVRepairman.com, and enter your zip code to search for a qualified service center at the following link.
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