JVC av-31bp6 is my model tv i have a horizontal line running through middle of screen, i hear either the ic convergence is problem or possibly a bad zener diode, have resolder in the power supply and the ic because i hear of solder connections being possibly bad still same problem, this is what i've noted though if i tap on the hv transformer i get picture back to normal tap again and back to horizontl line, i want to be sure if this is the issue the hv trans. because the lowest price i have found is $95 and past this expense it is really not worth fixing, if you could let me know a way of checking this transformer would be greatly appreciated. Lewis

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