Question about Hitachi Televison & Video

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Hitachi 42HDT79 plasma TV only produces max-volume screeching buzz sound on all inputs, regardless of volume setting. Changed cables (HDMI sources, broadcast cable). The only way to view is on mute.

It was a $3,000 TV. Is it cost effective to fix?

Posted by Anonymous on

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  • 33 Answers

It just only cost 4% of the total amout of the tv

Posted on Apr 21, 2019

Testimonial: "Thanks. So, parts are readily available? I've read that they might be hard to come by with an old plasma."

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6ya6ya
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SOURCE:

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Posted on Jan 02, 2017

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SOURCE: HDMI input not working

I had the same problem with my 50 zenith when it was new. It needs a HDMI board replaced.

Posted on Jan 18, 2008

SOURCE: Hitachi 42" plasma TV (42PD6600)

My plasma TV seems to have problems with picture immediately after turning on. At about two weeks ago, the TV lost picture after turning on the TV. It was corrected by disconnecting power then reconnecting. A switch on rear left hand side would click bringing picture ON, somehow this clicking seems to have problems being energized lately not allowing picture to come on the TV. Checked power cable and was getting 120 Volts to TV, nonetheless problem has gotten worst and TV does not show a picture? Your thoughts on my problem?

Posted on Feb 17, 2008

mistersony
  • 320 Answers

SOURCE: HDMI Input Stopped Working Sony Bravia KDL-40S2000

Bad input board BU or AU

Posted on Oct 18, 2008

  • 1 Answer

SOURCE: YOUR TV DOES NOT ALLOW DISPLAY OF THIS PROGRAM THROUGH THE DVI IN

I solved the same problem by disabling SIMPLINK from OPTIONS menu. I own the LG TV myself. The LG TV comes SIMPLINK "ON" as default setting from the factory. Go to MEMU -> OPTIONS -> Turn SIMPLINK to "OFF". This should work....

Posted on Sep 23, 2009

  • 1768 Answers

SOURCE: sony kdl-40v5100 has handshake problem

1.This issue sounds as though the TV connection circuit has an issue.
2. You have changed the DVR and the HDMI cables and you still have an issue with the video (pink screen) indicates a video circuit issue ( improper voltage or current) at the video section of the circuit.
3. This will require some troubleshooting by a qualified tech.
4. To make sure, try connecting another properly working LCD TV to the cable box or DVR an check.If you get a picture and sound properly it is the TV.
5. Usually a cable box is QA'd (quality assured) by the company and will not be sent unless tested 1st


Posted on Feb 05, 2010

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1 Answer

Hi there I have had the Tv for 5 years and it's


I would first check any of your inputs (i.e. cable, satellite, DVD player, ect...). If you hear this buzzing sound regardless of what input you are using, then it has to be the TV. If it's the TV causing it, audio is produced on the main board or A board named by Panasonic. It is the board that has the A/V inputs on it (cable, HDMI, component). This model has 2 different main boards it could use either TNPH0721ACS or TNPH0721ATS. As a TV repair technician, I often use Tri-State Module and would recommend them for parts. If you don't know which board you need, their customer service is helpful. I hope that helps.

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1 Answer

I have my Hitachi 42HDT79 42 in. Plasma Television on my wall and I have no voice, just a loud squeeing noice. It doesn't matter what volume its on.


It of course may be a audio problem in the set (main board) but is a box or anything external being used for sound on the set? Same problem with a DVD etc the only thing connected to the set?

Jun 06, 2012 | Hitachi 42HDT79 42 in. Plasma Television

1 Answer

Can i run pc - hitachi 42hdt79? if so which cables to use? my pc has dvi & plasma has hdmi


You'll need to buy a DVI to HDMI converter (with sound)...They run about $40-60 online or You can change out your video card on the PC and get one with HDMI Those are cheaper

Oct 11, 2010 | Hitachi 42HDT79 42 in. Plasma Television

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I have a brand new LG 50 plasma and a Bravia Sony surround sound system as well as a Cox Cable HD DVR box. I currently have it connected as such: HDMI from Bravia Sony System direct into TV HDMI from Cable...


you may have to set the input value on the bravia for optical on the input from the cable box. sometimes there is more than one way for a particular input to receive an audio signal, you may have rca(red and white), a black or orange rca type for digital, and then the optical. i would suspect you have to tell the bravia how the sound is inputed into the bravia. also , just a thought.... on the cable box there should be a volume control on the front of the box........ make sure the cable box volume is ALL the way up (it is the preamp volume).

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Hi, That is the best way. That connection allows you to take advantage of the panels audio features like sound leveling. The panel has a digital audio output(optical)which is good. By passing the video with the HDMI is the right thing also, the less connections in HD the less loss. You made the right choice ya Fixya yaself!

Feb 26, 2009 | Hitachi P50S602 50 in. Plasma TV

1 Answer

Hitachi 42hdt79 tv guide on screen with not remember tv guide lis


Mine did/does the same,,,while in standby it also did/does produce a clicking sound intermitently.....now Pic and sound cycles on/off every 10 seconds or so. Intestingly...I could go on....but whats the point........JUNK Hitachi says "to bad" 26 months old and $800 to fix. Buy another brand........

Feb 22, 2009 | Hitachi 42HDT79 42 in. Plasma Television

1 Answer

Set up


Seems that Hitachi DESIGNED the sound to cut off from the Audio Out jacks if you use component video or HDMI inputs. Has to do with copyright laws of the HD Video -- which makes it asinine that they disabled the audio as well, as it's not part of the copyright issue. Seems to me they were just lazy to disable the ENTIRE set of output jacks.

I am hoping to find some sort of hack for this (either firmware or severing/splicing a control wire). However, I can't find much information on this yet.

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3 Answers

New TV - no picture at all


Try pressing input on your remote and make sure the source is selected to what you have it plagged in. For example cable box plugged into hdmi1 set input to hdmi 1. Also can you access tv setup at all? If not your tv might be bad to begin with.

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