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Hitachi 55VF820 My tv turns off and then on agian, the red lights will blink in between. I replaced the lamp about three months ago. what could be the problem

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  • reelttooper Mar 22, 2008

    It stay's on for about five minutes or so before it shuts back off. It can go on like that until I get tired of it.

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Shuting down with the red temperature light blinking means it is overheated and needs to cool down a bit.

Make sure if your model has aircooling fans that they are clean and the air goes throught easyly.

Posted on Mar 22, 2008

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The protection circuit is shutting the set down. The reason it comes back on in 15 minutes or so is because the protection circuit resets itself after a while but detects the same fault when it is ON for a few seconds.

It is the protection circuit that is causing the set to shut down. Unfortuately we don't know which of the many sections of the tv is the one causing the problem in the first place.

Can you tell me how long it stays on and how long does it take before it comes on again?

Posted on Mar 22, 2008

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Well..the control board has this sort of issue. sometimes, if you turn if off long enough to reset itself, this may clear..otherwise, it's a replacement of a non inexpensive component..

what's your technical ability like?

Posted on Mar 22, 2008

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Bought a Hitachi 55VF820 at a garage sale and they said it wont turn on even after replacing the lamp.


I dont know the model but general trouble shooting might work. See it you can download the manual and or look at the web site for the trouble shooting section. Check the power cable for breaks, some can be hidden inside the insulation. Look especially at the ends where the wire gets flexed the most. Check if there is a fuzz and it is good. See if there is a removable panel and look inside for bad, burnt, of exploded parts. Read the bulb replacement section of the manual and remove and replace the bulb as instructed. Read turn on instructions and or break-in instructions. Give it some time to warm up.

2 notes; Do all this with out plugged into wall (for safety).
Be sure to try to not touch the bulb and clean it with a lint free clean towel. They are very sensitive to oil or dirt from handling. .

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