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LCD TVs - LED

Hitachi Ultravision Rare Annoying Sharp Sound

Andy_G
Andy_G
Andy_G
2
hace 5 años
hace 5 años
Hello, I bought a second-hand Hitachi Ultravision 42HDS69 TV, when you turn it on you listen to the audio well and it has an excellent image, the detail is that you also hear a sharp and continuous sound that after a few minutes is annoying. Please tell me that I did not make a bad purchase and that it still has a solution, what should I check on the TV? What tests do I do?
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TobíasTv
TobíasTv
TobíasTv
13.721
hace 5 años

hello, if you turn down the volume the high-pitched sound persists or leaves

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Andy_G
Andy_G
Andy_G
2
hace 5 años

Hi, the buzz continues even if I turn the volume down to 5 or put it on mute. When there is no image on the TV and it is on it greatly decreases the noise. If I change it to a channel that tunes the image, the zoom increases.

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Andy_G
Andy_G
Andy_G
2
hace 5 años

I clarify that I tried antenna mode, hdmi and with miracast.

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TobíasTv
TobíasTv
TobíasTv
13.721
hace 5 años
hace 5 años
Hi Andy, what buzzes you, for me, if it doesn't come out of the speakers, it must be the source, I would thoroughly check the electrolytics, see them swollen in a symptom of deterioration, Successes
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Andy_G
Andy_G
Andy_G
2
hace 5 años
hace 5 años
Hello, thank you very much Tobias, if it was the source, in fact yesterday it turned off completely after a loud buzz. :(
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TobíasTv
TobíasTv
TobíasTv
13.721
hace 5 años

Too bad Andy you didn't grab it before, are you going to fix it or are you going to send it to a service?
Here I leave the diagram just in case
https://elektrotanya.com/hitachi_42hdx99_42hdt79_42hds69_chassis_dw2-u.pdf/download.html

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