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Pls help my tcl tv model tcl 2175u with picture but no sounds.. the speaker is good...

With picture but no sounds, good speakers. i replace ic tda7057 but still no sound output. pls help

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The Knight

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If not muted, check the speaker/s. If found OK; check and replace the damaged component/s at its audio output section circuit board. If needy, replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. Surf the site with patience.
http://electronicshelponline.blogspot.com/

Posted on Jun 12, 2016

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NO Audio / picture OK .


Hello
First check whether the mute function is ON. If so make it OFF. If it is in OFF, and still there is no sound output from your tV, check its speaker first. You can check it by using a torch cell and two pieces of wires. Connect the wires at the both terminals of the battery, and touch the other end of the wire to, two terminals of the speaker. If the speaker is good, a 'thumb' sound will be heard from it. If no such sound, speaker is faulty. Replace the speaker with same type and number.
If the speaker is good, ans still there is no sound, the audio output section of your TV has the trouble. The most common faults to this section are Output IC damage, and loose soldering points. Check whether there is any loose soldering points in the audio output card. Especially check the solder terminals of the audio output IC. This IC will heat up whild it sorks, and repeated heating and cooling make the solder terminals of it to be get loose contatecd. Normally these loose soldering contacts are very difficult to detect, as they will be microscopically small. Just resolder all the suspected solder points by applying a little more solder, without making any solder bridge short in between adjecent solder terminals. You must have a concept of soldering to do this work. If his also does not help you, either replace the Audio Output IC ir replace the audio output card.
If you want a service manual of the same model of Proton TV, send your email address to me by FixYa. I can't send it to you by this mail, as it does not allow me to upload PDF files with it. OK.

Aug 10, 2011 | Protron PLTV3250 32 in. LCD Television

1 Answer

32in LCD Olevia TV has a picture but no sound. TV is only 3 years old. 332 model.


Hello there,


The problem with your television is the sound ic is bad and need to be replaced.To replace the sound ic you need to disassemble you television,located the television speakers,there will be a wire that connect the speakers and link it to the board where you can locate the sound ic.then you can replace it with the new one you got.


Thank for you fixya
Caseytech

Jul 01, 2011 | Televison & Video

1 Answer

TV has no sound


Hello

You haven's specified nothing about the picture. Picture is Ok and there is no sound I thinks and posts this solution

Either your TVs speaker or its sound out put ic has damaged. To check it and conifrm you just do this first. There is a stero headphone socket on the front panel of your TV. Insert a headphone pin inot it and listen whether there is sound output come ffrom it or not. If there is sound output from the headphone socket, and not from the speaker, be sure taht the speaker is out.
If there is no sound output from the headphone socet, wither your TVs sound output ic is damaged or it doesn't get proper voltage to go on. It is very easy to locate this IC, as speaker wire goes directly to this section. Just follow the speaker wire and locate the IC, usually screwed on to a metal heatsink. Check its input voltage. If there is no voltage to that IC, check the track associated with that pin. If there is voltages and still not works. first resolder all the pins of that IC by applying a little more solder, whout shorting the adjecent terminals. If this does not helps, replace that IC with same type and number. OK.

Jan 05, 2011 | RCA F27442 27" TV

1 Answer

Beautiful picture,no sound


Hello
If your TV displays good picture and there is no sound output from it, please connect an earphone or headphone to its headphone/earphone socket, if provided, and check whether the sound output comes from it or not. If there is sound output from the headphone socket, and not heard from the speaker of your TV, the speaker inside your TV may got damaged. Check the speaker of your TV. For that you have to open the TV. Unscrew it and go for the same type and number and replace it. There is an other possibility, that is if your TVs headphone socket itself can got damged. You can make sure it by after checking your speaker. If the speaker is alright; the socket is faulty. Replace it with same type.
An other fault can occur is Audio Output Ic failure. If it has damaged, you won't get sound output either from speaker or from the headphone socket. You can make sure about it. Keep your ear very close to the speaker side of your TV, switch on the power to TV. If there is a "Thumb" soud is heard, you can make sure that your TVs speaker is Ok, and if there is a "Hum' sound also comes from it, Output Ic is damaged.
If so you have to open your TVs back cover and locate the Audio Output Ic. It can be located by following its speaker wire. The speaker wire goes to Output Ic. Usually it may be screwed into a metal heatsink. Desolder it out of the board, and go for the same type and number. Replacing it will solve the problem.
All the precautions must be taken before opening your TVs back cover. Plug it out from the wall socket bfore doing this. Keep chldren away from you, and not let them even stand beside you. Let an adult be there beside you as a precationary measure.
Read and understand well the above said solutions and go on.
Wish you sucess.

Oct 23, 2010 | RCA 27V514T 27" TV

1 Answer

No sound


Hello
You haven't mentioned about the picture at all. Assuming that, picture is ok I suggests. Ok
If the picture is Ok and there is no sound output from the speaker, your TV has either speaker problem or output Ic problem. To assure where is the fault, you just place your ear very near to the TVs speaker side, and switch on the TV. If you hear a "thumb" sound or a "HUM" sound, your TVs output ic has blown out. If you did not hear any sound at all, the speaker of your TV has gone.
If you have a little knowledge in electronics, you can do it by yoursef. This is a minor mistake. Opwen the back cover of your TV, locate and note the type and number of the audio output Ic, go for that and get it replaced; if the fault is related to Ic. You can do the speaker replacement also by this way. I have given this much advice, assuming that picture in your TV is Ok. Otherwise the fault may be different.

Oct 20, 2010 | Bush Televison & Video

1 Answer

NEONiq HD TV MODEL LEH21F8 FROM FOX TO SET GOT PICTURE NO SOUND


Hello,

The sound IC of your television is bad that is why you have picture but no sound.

The sound IC is the card that the speakers are connected to, and it is connected to the main board of the television.

Once you get the sound IC replaced, your television will be in good conditions once again.

Take care

Oct 10, 2010 | Televison & Video

1 Answer

In chennai free kalaignar tv sound not coming i changed sound ic an 17823a still sound not coming ples sen me the detail of this sub!!


you replaced the power amp ic before that you need investigate the condition of power ic and it's very simple when you terned on the tv set you can hear the small pop noice from the tv speaker means the power ic is good other way is just tuch the screw driver to sound if output stage you can hear the DERRR sound from the speaker
if it ok pls check the mute transistor

Aug 27, 2010 | Televison & Video

1 Answer

Panasonic Projection TV


If you are using your TV's internal speakers, then you have a loose connection inside your TV more than likely on your audio output IC. Re solder all connections on your audio output IC's. To locate your IC, trace your speaker wire back to the circuit board.

Feb 23, 2008 | Televison & Video

3 Answers

Philips model ptv915 model # 60P8341a


  • sound  off & on is dye to loose contact in sound section
  •  plz check
  • speaker wire or connector loose.
  • speaker defective.
  • loose contact or print loose in sound section.
  • supply to sound section.
  • sound output ic or print loose.
  • hopr this will help
  • good luck.

 

Oct 19, 2007 | Philips Magnavox 27MS343S 27" TV

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