I have a Panasonic 27" TV CT27G14A. Manufactured, purchased 1999 and
never had a problem until my last move.

TV now appears in black and white.

I called some local shops trying to get a quote on how much repairing
this would cost and got an assortment of quotes varying from $90 to
$130 to start (for evaluation), parts additional.

Anyone know what the problem might be and how much it might cost to
repair?

Any insight is appreciated, thankx in advance.