Question about Protron PLTV-37 37 in. LCD Television

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Akai lct2785ta Sound Problem

Every time I change the channel, the sound defaults to Mono and I have to press the MTS button to change it to Stereo. I can't believe a company would produce a product that you have to press a button to get stereo every time you change channels. There has to be a way to have the default stereo.

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  • Anonymous Feb 29, 2008


  • Impala01 Oct 25, 2008

    sound seems to be locked in "mono". On some channels I have to press the mts button on the remote to get sound (stereo).and I have to do it every time I come back to thses channels. Called Vizio twice and after 45 mins. total on phone, they have no answer.They say it is the combination of the sound card and the cable signal.I believe it has something to do with the setup but can`t find a menu screen that lets me select audio mono or stereo



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  1. i have pictur but no sound on my protron plasma lcd

Posted on Jan 22, 2009

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Bear with me...I will start talking about CC, but I think my solution may work for you, too. I noticed that every time I turned on Closed Captioning, when I changed channel, it went off.

I went into the on-screen set-up, and turned on the CC there. Now, when I turn OFF CC, then change channels, it comes back on.

So, it may just have to do with your set up. Go there and set the default sound to stereo and see if that fixes it.

Good luck.

Posted on Jan 03, 2008


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3 Answers

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.

Apr 01, 2011 | JVC AV32F476 32" TV

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.

Oct 28, 2010 | RCA TruFlat 27F520T 27" TV

1 Answer

My truflat is speaking spanish on some channels and some channels showing picture and no sound . and the when i turn stereo,mono,and sap pops up.

you have teh audio set in SAP mode. Some nits have the audio mode button on the remote. Otherwise go into the audio setup menu and choose MTS(stereo) or mono.

Apr 28, 2010 | Televison & Video

1 Answer

No sound on some channels, other channels fine

Your SAP/MTS function is most likely turned on. This feature has 3 modes: Stereo, Mono and SAP. Stereo and Mono are easy to understand, it's the SAP that can get you. SAP stands for Second Audio Production. It is used to provide weather, information or an additional language translation of a program. Some broadcasters simply transmit the mono audio over the SAP audio channel when the are not using it for other purposes. Other broadcasters simply do not use it, which does not give you any audio. Look on your remote for a SAP or MTS button. If you do not see one, look in your TV user menu for this feature. If you are using a cable box, look in the audio menu of the cable box. You are looking for something set to SAP... just change it to STEREO. I hope this was helpful.

Mar 26, 2010 | Televison & Video

1 Answer

We don't get sound on some of our channels. we have time warner cable, but no box. We see the picture, but no sound - but only on certain channels.

You have accidentally turned on your secondary audio (SAP). Look on your original TV remote for a button that says MTS or Audio and when you press this button it will say something like SAP, MONO or STEREO. You want to set it to STEREO for best sound and to get back the audio on the channels that you are missing.

If you are having trouble finding the way to shut off the secondary audio please repost with you TV Brand and Model # and we will try to help you.

Good Luck and please rate this solution....

Jan 09, 2010 | Televison & Video

1 Answer

Lost sound on ABC,NBC,CBS & ESPN classic

on your remote there should be an MTS button, try that because sometimes they broadcast shows in/on mono,stereo or sap. go to those channels and try switching to either mono,stereo or sap. let me know and good luck

Jun 16, 2009 | Emerson Televison & Video

3 Answers

Sound very poor

there could be a few issues. It could be the speakers themselves. I believe this tv has an audio out. I would hook it up to a stereo and see if it that improves it. It could also be something internal like the amplifier. You have a couple options but I would just use a stereo for sound. If you still need more assistance let me know. Please take a moment to accept and rate my solution accordingly.

Oct 18, 2008 | Philips 42MF130A 42 in. Plasma EDTV

1 Answer

Program channels

1. Press the MENU button.
2. Use or button to select the TV setting menu, then press or button.
3. Use or button to select the Channel no. setting and use the or button
to change from AIR (over-the-air broadcasts) to CABLE (cable/satellite broadcasts).
4. Use or button to select the Tuning mode and use the or button.
5. Use or button to select the Auto tune and press or button to
confirm the selection. The unit will immediately search through all possible TV
channels and store those channels with signals in memory. After this is complete,
the unit will switch to the first channel found.
6. To exit the MAIN MENU and return to the normal screen, press the EXIT button.
Note : In DVD mode, this option is not available.
1. Channel no. : 2-69 channel for Air mode, 1-125 channel for Cable mode.
2. Tuning mode : Air or Cable mode are available.
3. Auto tune : Searches for usable stations and stores them in memory.
4. Skip : ON - Skip weak channels. OFF - No channel skip.
5. Fine tune : The frequency changes to allow fine tuning.
6. AFC : Auto frequency control.
7. MTS : Select the Mono sound/Stereo sound/Secondary Audio Program (SAP).
MTS (Multi-channel Television Sound) SETTING
This feature allows reception of sound other than the main audio for the program.
1. Press the MENU button.
2. Use or button to select the TV setting menu, then press or button.
3. Use or button to select MTS menu, and press or button to select the
options (Mono, Stereo, SAP)
4. To exit the MAIN MENU and return to the normal screen, press the EXIT button
on remote control.
• MTS only operates while in TV mode.
• The SAP (Secondary Audio Programs) feature allows a TV station to broadcast
other information, which could be audio in another language.
If you reset the TV to the factory settings, all your present settings on picture &
sound will be erased and replaced by the factory’s default settings. However, picture
setting in PC mode and parental setting will not be erased.

Jul 15, 2008 | TruTech PLV1615T 15 in. LCD Television

1 Answer

Akai LCT2070 Stereo Sound

This tv is kind of got a mind of its own the only time you can adjust it on mine is on cable that comes in stereo actually it usually switches by itsself after it reads the broadcasted sound. Hope this helps.

Nov 09, 2007 | Akai LCT2070 20 in. EDTV-Ready LCD...

2 Answers

Akai LCT3785TA stereo vs. mono issue

Well the default is to obtain the channels signal. most channels over the world their audio output signal is mono. Rare tvs have the ability to save indivisual channel to their memmoty. Read the tv prospectus!!!

Sep 04, 2007 | Akai LCT3201AD 32 in. LCD Television

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