Question about Hitachi 50VF820 Projection TV
The electrolytic capacitors have aged and there is a much bigger current passing thru them , overstressing the power source an triggering the protection system which shuts the tv off , which cuts the current thru the capacitors, which makes the protection system inactive, which allows the power source to start again a new power - shutdown cycle.
Only when the capacitors heat up from all that current that has passed thru then their internal resistance approaches the normal level so the current drops to tolerable levels allowing the power source to remain on.
Replace all capacitors immediately , or one will fail for good and fry a lot more.
Posted on Oct 12, 2010
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Posted on Jan 02, 2017
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