I have a Panasonic CT-32D31 TV and I've been

Your symptom sounds like a damaged component in the pincushion circuit.

When this circuit fails the picture will have an hourglass shape to it with black in the middle on the sides, or you will see square objects as hourglass shapes.

I would recommend that you have a local service center diagnose the set for you and give you an estimate of the repair.
I have seen this type of repair run from $150.00 - $200.00.

The cost of the repair or replacement of the set is completely up to you. I would most likely recommend that a replacement may be in order, as most television sets are becoming cheaper all the time.

I hope this information allows you to resolve this issue.
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