Question about Toshiba MW24FM1 24 in. TV/VCR/DVD Combo

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Intermittent audio out of speakers, but always works using earphones, and may be out of commission for a half of a day, before coming back on without any external physical or electronic provocation. Also, it doesn't seem to matter whether the TV set has been on constantly for all day/night at operating temperature, or just turned on and not at operating temperature. Shutting off and turning the TV set back on again with the remote control, on-set on/off button, or actually pulling the AC power plug from the electrical source doesn't seem to have any effect on the problem. Advice?

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Is the headphone socket gritty. Does the sound coming out the speakers work for longer or less after removing the headphones.

Posted on Dec 24, 2008

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1 Answer

Speaker is off


Most of these combo units do not have a speaker ON or OFF setting but look anyway.

If the set has a earphone jack that may be the problem--see if works with earphone plugged in.

The socket the jack goes into can get flaky as when jack is inserted it turns the sound OFF.

Also put your ear right to the speaker to see if anything at all is heard--the speaker could be bad--but check the above first.

SD TECH

May 27, 2012 | JVC TV-13142 13 in. TV/VCR Combo

1 Answer

The sound on my tv and dvd combo went out. How do I get it back?


check to make sure speakers not turned off (audio menu) and get up to check if any sound at all from speakers as sometimes the plug inside will come loose disconnecting the speaker/s


Other than that you may have a problem in the audio circuit and that might not be economical to fix

Mar 17, 2012 | Emerson Televison & Video

1 Answer

No sound/audio while playing tv.


Hello

If there is no audio output from your tv, either your TVs speaker or its audio output IC has damaged. You just check it with an earphone/headphone, if there is an earphone or headphone socket in front panel of your TV. If there is sound from the headphone/earphone, and not from the speaker, means the speaker has damaged. You have to replace it with same type and number. Just check your set's audio out socket, if any provided, connet it to any external audio sourse, like amplifier or so, and check whether there is sound output from it. If not, your Tv/combos' sound processing IC inside has some trouble.
most common fault is related to sound output IC or speaker itself. If speaker is found OK, go to the sound output section. This section can be easly located as speaker wire goes to that section, and follow it. Before replacing the IC, check its leads for any loose or bad soldering. i advice you to resolder all the terminals of that IC, by applying a little more solder, without making any solder bridge loose contacts between them. If this does not helps, replace the IC with an identical type and number. OK.

Dec 24, 2010 | Panasonic PVQ-M2509 Combo

1 Answer

What makes a popping sound coming from the speakers


Hello,

Assuming you are not attempting to play it at ear shattering levels, this may be due to an alignment problem in the IF/audio demodulator, a bad audio IC or other circuitry, bad connection, or a defective speaker.

If your TV has an earphone or audio line out jack, try this to see if it is clear. If so, then your problem is in the final audio amp or speaker(s).

If only one channel of a stereo TV is affected, it is almost certainly the audio amp or speaker for that channel. Interchange connection to the two speakers temporarily and see if the problem moves.

If the problem is at all intermittent - try gently whacking the TV - then it is likely a bad connection - either a cold solder joint or a dirty or tired IC socket.

The audio amplifiers in newer TVs are almost always ICs and replacements are usually readily available. If the IC is in a socket, remove the IC, clean the pins and socket contacts and reinstall it. Sometimes, the contacts on old socket lose their springiness and do not provide solid connections. Such a socket will need to be replaced.

If the set uses discrete transistors, it s also possible for one of these to become noisy.

If your TV is fairly old - 10 years or so - this may be an alignment problem requiring tweaking of a coil in the sound IF. See your service manual. It may be possible to have similar problems with newer TVs but this is relatively rare.

There could also be bad electrolytic capacitors, probably in the power supply area. Even though you might think this would result in hum and there is none (even when there is no audio in the program or the sound is turned down) dried up caps can result in distorted sound that may sound like a sort of clipping. An ESR meter is best for testing (with power off!) but carefully jumpering known good caps across suspect ones (again with power off, then turn on the set and check), will eventually find the bad one(s).

Jun 01, 2010 | Televison & Video

1 Answer

The sound of the audio amolifier is not clear.


Hello,

Assuming you are not attempting to play it at ear shattering levels, this may be due to an alignment problem in the IF/audio demodulator, a bad audio IC or other circuitry, bad connection, or a defective speaker.

If your TV has an earphone or audio line out jack, try this to see if it is clear. If so, then your problem is in the final audio amp or speaker(s).

If only one channel of a stereo TV is affected, it is almost certainly the audio amp or speaker for that channel. Interchange connection to the two speakers temporarily and see if the problem moves.

If the problem is at all intermittent - try gently whacking the TV - then it is likely a bad connection - either a cold solder joint or a dirty or tired IC socket.

The audio amplifiers in newer TVs are almost always ICs and replacements are usually readily available. If the IC is in a socket, remove the IC, clean the pins and socket contacts and reinstall it. Sometimes, the contacts on old socket lose their springiness and do not provide solid connections. Such a socket will need to be replaced.

If the set uses discrete transistors, it s also possible for one of these to become noisy.

If your TV is fairly old - 10 years or so - this may be an alignment problem requiring tweaking of a coil in the sound IF. See your service manual. It may be possible to have similar problems with newer TVs but this is relatively rare.

There could also be bad electrolytic capacitors, probably in the power supply area. Even though you might think this would result in hum and there is none (even when there is no audio in the program or the sound is turned down) dried up caps can result in distorted sound that may sound like a sort of clipping. An ESR meter is best for testing (with power off!) but carefully jumpering known good caps across suspect ones (again with power off, then turn on the set and check), will eventually find the bad one(s).
Hope this helps...

May 29, 2010 | Curtis CMC13101 Combo

1 Answer

UMC 19in TV with built-in DVD player - model L19/7TCD


Try connecting earphones or headphones to the 3.5mm Headphone socket on the TV and check this works correctly, i.e hear TV when watching TV, hear DVD when watching a DVD etc.
If all is OK, purchase a 3.5mm Jack to L/R Audio/Phono cable. Connect the 3.5mm jack in to the headphone socket on the TV and connect the red/white phone ends to the 5.1 surround system.
It should solve it. SCART out is not always live in all sources so is not a reliable way to connect.

May 22, 2009 | Emerson EWC19T3 19 in. TV/VCR/DVD Combo

1 Answer

No Audio


need to change connection earphone

Oct 28, 2008 | Broksonic CTSGT8118T 13 in. TV/VCR Combo

1 Answer

No sound


is there sound at  AV OUT  pins  check  with any  amplifier ,  if sound is coming  then  there should be  AUDIO AMPLIFIER IC gone . and  replace it  with same number....
if sound is not coming   then  inside TV kit there should be CHROMA IC gone   and replace it with same number,

this will solve  ur problem

thanks

Oct 25, 2008 | Symphonic SC309C 9 in. TV/VCR Combo

1 Answer

No sound


What brand? Often people accidentally turn the internal speakers off, although probably not on a combo unit. Other times folks turn the audio all the way down on their cable box or satt receiver, then there could be no or low audio for the TV reception. But dvd or vhs sources would still work. Always possible for the small speaker to blow, or audio output to fail.

Jul 24, 2008 | Televison & Video

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