This is a special type of fault seen in most models of televisions, irrespective of Brand and model. The flyback transformer side cirucit must be checked for faulty components.
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SOURCE: shorts out the horizontal output transistor
check the right voltage in the power supply first.then check the driver circuit and last the flyback transformer.sometimes there is a faulty shorted capacitor in the 200v or the horizontal yoke coils
SOURCE: Horizontal output transistor gets hot and shorts after 1 minute
QUITE LIKELY THE FLYBACK TRANSFORMER
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