Question about Hitachi 65S700 65" Rear Projection HDTV

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Whining sound from back of tv sounds like fan must turn volume up to cover noise

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This is a 15 k frequency sound
It is usually caused by one or more of the components in the High voltage circut,
with the set on and the back off, take pencil with an eracer.
Then push on each of the coils or transformers to see if it stops or diminishes.
if so coat the part with silicone sealer spreading to at least 2 components nearby. let dry.
This may help.
Thanks guy9

Posted on Jul 08, 2008

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Posted on Jan 02, 2017

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If this helped you, rate this as I do this here for FREE.

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