My 32" interiart (model no AV-32WFT1EKS - purchased Nov 2000) TV switches off and can only be switched on again if you turn off the mains and turn it on again. Then sometimes it goes to fire up, the sound comes on and the picture does not, just a white and blue haze at the bottom of the screen for about 2 seconds before it shuts down again. Supplier has taken it back to test and can't get it to replicate fault. Any ideas

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