Try unplugging the Convergence amp board, which is located behind the speaker grille. If the set will power up with the Convergence amps unplugged the ICs will need replacement. I have seen many JVC in both the WP30 and WP74 pop through the speakers when the ICs short. Unplugging them takes them out of the equation and the set will power up but the pic will have severe convergence issues.
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