Question about Hitachi 55HDS69 55 in. Plasma Television

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Hitachi 55 inch plasma tv

Ok tv is about a yr old warranty just expired i was watching tv and decided i wanted to play xbox i go to connect it and my speakers start making a fuzy whistling sound i have clear picture i have a 55hds69 model i tried opening it up to see if something wrong with speakers but they seem to be working fine so its not the speakers that are blown out so to say well can some one please help me thanks guys

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  • lynk783 Dec 13, 2008

    well hd rca jacks i just took it apart and i tried an external speaker and it gave me the same fuzzy noise and the external speaker i know works for a fact so im guessing its the sound card what do you think

  • lynk783 Dec 13, 2008

    well yea i checked with my regular dvd player my xbox and also cable on all the ports and all get the same result btw thanks for taking time to help you sir are cool lol

  • lynk783 Dec 13, 2008

    ok just tried it it dont work matter of fact i even took the dvd player off and u know how most tvs just stay silent it still made the fuzzy noise

  • lynk783 Dec 13, 2008

    no same sound all around i connected the dvd player and disconnected it one by one as suggested and i did the same with the cable box one by one disconnected and same fuzzy sound no change in the pitch or the fuzz i dont know im about to just light it up and watch the tv melt lol

  • lynk783 Dec 13, 2008

    no headset jack and i took the cover off an unplugged the speaker and plugged up one of my surrond sound speakers up internally and it still gave me the fuzzy sound from it and no with the tv with nothing connected it still has the sound

  • lynk783 Dec 13, 2008

    oh my god im horrible i had given up and just put it all back lol i came to the conclusion tha it was some sort of board where the speakers are connected to

  • lynk783 Dec 13, 2008

    so what do you suggest that i do cause when i opened it their was a bunch of wires lol

  • lynk783 Dec 13, 2008

    ok wait thats alot my friend tha was here helping me ealier to lift the tv an stuff like tha is gone which means im by my self and the tv was put back in the stand do u have a personal email i can get a hold of u and i can def do this tom or should i just post on here let me know thanks

  • vwb11356 Dec 27, 2008

    I had a similar problem. I changed the audio to Mono and it helped with the "White Noise" I was hearing. Not sure if this is the same issue, but you may want to give it a try to see if it leads to something else. I hope this helps.

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  • 116 Answers

What type of connector are you using fo your xbox? I think

Posted on Dec 13, 2008

  • 6 more comments 
  • Justin Washburn Dec 13, 2008

    We need to isolate the problem, so to start to you get the fuzzy noise on any other channel or input, do you get the sound without the xbox connected?

  • Justin Washburn Dec 13, 2008

    Its not a problem I enjoy fixing things, does the sound stop when you unplug the xbox or dvd player? If it does try switch the wires, plug the red into the white and the white into the red, I want to see if the problem moves.

  • Justin Washburn Dec 13, 2008

    ok, now we are getting somewhere, disconnect everything from the tv you have attached, one by one listening for a change in sound, by doing this we isolate the problem to the tv only. with everything disconnected we want to change the input selected, moving from video one->video two-> hdmi-> and so on, listening for any changes in sound. once we isloate it to the tv we can start isolating the area.

  • Justin Washburn Dec 13, 2008

    hahahha, that wouldnt be good, lets disconnect everything from the tv, so the only cord running to it is the power cord. see if sound disappears, you said you hooked speakers up to it right? do you do it internally or externally? also does it have a headphone jack? if it does hook some headpnhones up and see if you get the sound in the head phones. we are try to isolate the circuit that is giving us the problem..

  • Justin Washburn Dec 13, 2008

    ok, woohoo, we getting somewhere you still have the cover off right? what we are looking for is wire that are very near sharp metal edges, be very gentle we are only concerned with the analog board and the wires going to it. We are looking for any wire that may be grounded, it wont take much from speaker vibration for the metal edges to nick the thin plastic covering on the wires. You have a problem with the analog board or its wiring but we are getting closer.

  • Justin Washburn Dec 13, 2008

    The board is a high probability but wiring is just as likely, if one of the wire grounds out itll generate a signal and be amplified by the sound board.

  • Justin Washburn Dec 13, 2008

    Well, you have two options have it fixed or troubleshoot it further. With it open you would want to lift wire paying close attention to where they go and what the touch, any wire that are runing to the power suply you want to leave alone and any ribbon cables dont need to be messed with, basically just loook for shorts, you could even use a plastic knife to move wires aroun with the power on to see if the noise disappears. Since the tv is working and what ever the problem is, it is most liekly very simple. If you have the cover off post a pic of the bck of the tv so i can see inside and I can edit the photo and show you were to look.

  • Justin Washburn Dec 13, 2008

    JUst post on here, yah i wouldnt move that thing without help, gotta wiegh close to 200 pounds or more, post a pic on here and ill keep an eye out for the update.

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