Question about Hitachi 43FDX01B TV

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Hitachi My tv started making cracking sounds which are coming from the tv speakers. Is there anything I can do to fix this?

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  • Hitachi Master
  • 5,568 Answers

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.

Posted on May 30, 2008

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Posted on Jan 02, 2017

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I have a 42 inch Hitachi plasma tv that is making a very loud static noice coming from the internal speakers. It stays at a contstant very loud volume unless I completly mute the tv or turn the volum


Based on what you have tried if a buzz or loud static via the speakers you have something wrong in the audio output circuit of the set--problem here is that circuit may be part of the Main board that processes all signal---a look inside---following the speaker leads back would lead you to that board.

A simple thing to do to narrow it a little (you may have done this) is with sound all the way off put your ear to the internal speaker--hear anything at all like a deep hum?

Depending on age of set and cost of the board likely bad it may or may not be a do it yourself repair.

SD TECH

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Hitachi LCD TV lost sound without any warning. Was working fine and paused live TV on the Sky box. When we took off pause no sound at all. No crackling speakers or anything at any time prior to this or...


Try to check first the audio setting in the main menu, to make sure that the speaker are not set off or the mute setting. and you can use a multi media speaker or computer speaker and install it at the audio output of your tv to be sure that you are getting sounds, if you are getting sounds then the problem can be in the power amp circuit, but if you do not get any sounds the problem would be the sound processor circuit you may need to bring it in the repair shop or you can contact a service technician to repair it for you and save you from stress good day and best regards.

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i am having the same problem with my hitachi.. if you find anything out plz let me kno

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Sound changed


I would first go into your audio menu and make sure the correct settings haven't been changed, also the variable or fixed output is on fixed.
Does your set have the external surround sound speakers for the rear or are you using an external surround sound audio system?

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Replace the main board and it should correct this, if it did it all the time I'd say its a bad speaker but since it works ok to start with sounds like a bad audio output chip in the main

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I would bypass the speakers from the projector and connect the audio output from the DVD to a sorround sound system or to computer speakers.

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We had the same problem with our tv. We had to take it to our local radio shack. It cost another 200.00 to fix, but apparently they have seen a lot of problems with the hitachi. They had to order a new module for it. You might want to check with someone who deals with and fixes tv's in your area.

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1 Answer

Toshiba TV 36''


 

 

  •  this cracking on my tv. It cracks and makes lots of noises

 

  • it sounds me that your speaker paper cone has become hard or paper has damaged. so best remedy is to change speaker.
  • if it is ok then replace all electrolytic  capacitors in audio output section.
  • check supply to ic or ic.
  • hope this will help.

 

Oct 11, 2007 | Toshiba CF36G40 36" TV

1 Answer

I Have a Hitachi Ultravision projetion TV Ned help to fix it.


This sounds like the solder joints on one of the convergence output IC's have cracked loose or the IC itself is defective and quitting when it warms up. The IC needs to be either resoldered or replaced.

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1 Answer

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Does the " popping" noise come through the speakers or from the TV chassis ? If it is coming through the speakers you could have a bad solder joint somewhere in the tuning circuit. If it is a snapping sound coming from the chassis, then you probably have something arcing in the high voltage circiut. If this is the case then you should have it checked out since this can cause other parts to short shutting down you set completely.

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