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I have a Hitachi 32LD8600 LCD tv and the sound has started to have a kind of razzling noise and when it does that the normal sound disappears. It is ok for a while after I turn the tv off and back on again.

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5 Suggested Answers

JMuskovitz
  • 135 Answers

SOURCE: Humming noice

I have seen similar problems (features?) with Syntax LCD TVs. One thing to try is to make sure that the backlight brightness is set to its highest setting. On my Syntax, when this is set to a darker setting, it produces annoying hum through the speakers. Mine also is smart about turning *off* the audio amplifier when set to zero (or mute), which sounds like the behavior you are describing.

Posted on Apr 17, 2007

SOURCE: hitachi 50 inch projection tv model # 50ux58b

how to clean the lenses?

Posted on Feb 17, 2008

milmar
  • 50 Answers

SOURCE: Grundig LCD TV

try to resolder the pins of the chroma IC and some possible lose connections you can see in the PCB board...

Posted on Aug 01, 2008

Ecollier2012
  • 3459 Answers

SOURCE: beeping noise when I turn on my TV


www.TvRepairKits.com just added a kit for the "chirping set" problem. 

Hope this helps,

Posted on Dec 22, 2008

falter
  • 245 Answers

SOURCE: Hitachi 32'' lcd tv picture runs slow sometime and goes dark

go in touch wit HITACHI costumer help and service and tell them ur problem u have.....how old is ur TV?
hope u get a answer from hitachi....and good luck

Posted on Mar 12, 2009

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Hitachi


What you are hearing is the impending death of some component.
I see your post is old so I won't spend too much time on it.

Certain capacitors and semiconductors will produce this kind of noise when dying.
An intermittant solder junction can also do this.

It would take some signal tracing skills to locate the origin though I suspect you have already paid for the work or given up on the set.

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