Question about Philips Magnavox 20MT133S 20" TV

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Mono - no sound

My phillips tv keeps saying mono and there is no sound ...what can i do ?

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Re: Mono - no sound

Your remote may have a "mute" button on it. If it does then the button may have been accidentally pushed.
Also in the menu there may be a setting to turn off your speakers.
Some sets also have an external speaker switch which will turn off the speakers to let you connect an external amplifier to the set.

Posted on Feb 19, 2008

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Can't change from MONO to AUTO mode

Can't make sound from mono to auto is your problem I thinks and posts this solution.
Hit the "Menu" button and surf through, come to "Sound Adjust" window.
The settings allow you to change and adjust sound in your TV. There are Bass, Treble and Balance control to adjust to your individual taste.
To adjust them
1. Press Menu button.
2. Press UP or DOWN button to select the desired item.
3. Press => or 4. Press EXIT button when finished.
When adjusting the parameter of "Balance" control, always set it to mid position to get stereo sound from both speakers. If it is set to any extreme end, there will be no output from the speaker of that side, and will hear as mono.
If you press "0" [Zero] button, you can reset the sound settings to it Factory settings.
To select 'Streo mode;
1. Press "Menu" button.
2. Press UP or DOWN button to select MTS [Multi-channel Telivision Sound].
3. Press => or [The ON AIR arrowtells you if a broadcast is in stereo AND/OR contains the SAP.
Press "Exit" button when finished.

Keep the TV in stereo mode to get the best sound quality. The sound will work in stereo

mode even if a certain broadcast is in mono sound only.

Choose the mono setting to reduce excessive noise on a certain channel or broadcast.
Selecting SAP will allow you to hear an alternative soundtrack, if one is available.

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1 Answer


from your remote

Press MTS to select a sound mode if available with the TV programming: MONO,


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1 Answer

Hello, i am trying to move the tv from mono to

Take your remote, go to menu, scroll down until you see sound settings, when you see mono/stereo, use the right arrow and click it until cursor is over stereo, next press enter, that should restore your stereo sound.

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1 Answer

How do I get my rca truflat tv to get out of mono?

Press the MTS on the remote control handset to select STEREO, MONO or SAP. All the options will be available only when the current TV channel is broadcasting that option. Channels will not always carry programes, that have all MTS options. If "STEREO" appears on the screen when you select a channel means stereo sound is available with current programme. You can hear sound from both speakers. If broadcast is not strong and clear, stereo sound will not be available. Press "MTS" button to change it to "Mono". This will eliminate the noise. If "MONO" appears on the screen when you select a channel, stereo effect will not be availabe, even though you have set it to stereo. If "SAP" appears when you select a channel 'Second Audio Programe' [SAP] broadcasting is available for that programme. Press the "MTS" button to 'SAP' and you can hear that programe in different language or some other kind of audio.

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2 Answers

My tv stuck on mono how to get off mono

On the original TV remote press the "AUDIO" button until it gets to the option "MAIN" and this should get the stereo sound back.

Good luck...

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Phillips Eye Fi television sound not comming, momo

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062596 display or menu

check option bytes , opt byte sticker is pested on crt or backcover correct the values problem will be solved

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switch on the tv and search for the correct channel and frequency,
go to menu, channel select, and autosearch your tv will scan through.

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your speaker maybe busted or check the amplifier IC

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** sound! Please help

I'm not sure about 10 seconds but its been unplugged and plugged back in and the darn thing still wont work.
I will try it
Thank you!

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1 Answer

No audio on select channels

Go into the TV's menu and see what type of audio mode its set on. If it says sap turn on to stereo or mono. If it says stereo, set to mono. Also try to unplug set for 12 to 24 hours.

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