RCA TruFlat  27F520T 27" TV Logo
Posted on Jun 01, 2008
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SAP turns on automatically on a few channels

On a few channels,(4 or 5) I have no sound until I go the menu and turn off the SAP. The set then works fine until I leave that channel and then later return to it and find that the SAP has turned itself back on.

How can I disable the SAP permanently on these channels?

1 Answer

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  • Expert 85 Answers
  • Posted on Jun 03, 2008
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Maybe the switches of your tv are malfunction

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Related Questions:

0helpful
1answer

No sound on a few channels. all others have sound. 26 in vizio.

Since you have sound, the audio circuits are working. The most common cause of this is to have the TV set to use SAP. There are many channels where this is an unused option and others that broadcast the same audio on the standard channel as well as SAP. If you change the channels and get Spanish rather than English for example, you have SAP turned on. Check the audio menu for SAP status.

Let us know what you find.

Dan
0helpful
1answer

I have a Quasar TV that has worked perfectly fine until the other day. Picture is fine, but no sound. The speaker volume is on.

Check all your channels. If you are getting sound on some channels but not others it is a good possibility that your SAP setting is turned on. Simply go into your audio menu and disable the SAP. Not sure about your model tv but some Tv sets had a switch on the back to disable the speakers and some have a setting in the menu to disable the speakers. If you have a digital cable box hooked to the tv it is possible the cable box volume is turned all the way down which will override your tv volume. Check these options and hopefully one of them works for you.
15helpful
1answer

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.
2helpful
1answer

No sound on only a few channels

hello, check on the menu to see if the SAP is on if it is turn it off.  by the way SAP stands for second audio program.i don't think you have any problems other than that.
1helpful
1answer

No sound on some channels, some channels have wrong sound for pic

The SAP feature has been turned on. Look for a button that says SAP or go thru the audio menu and turn it off.
1helpful
1answer

Sound

SAP is short for "second audio program" and is a way to send a second audio track along with the main one. In many areas stations use SAP to provide Spanish or other language sound for movies and other programs. If you have SAP turned on you don't know it until you tune to a channel where it's being used, and then you hear the other sound. Just turn SAP off using the remote control or TV menu.
0helpful
1answer

I have no sound on channel 2. All other channels the sound works fine. There are no audio cables going to it. Just straight cable. Even moved it to another room to see it would make a difference. And it...

Hello mwrobinson19,

Check to see if SAP (Second Audio Program) is turned on. Having SAP on can often cause this problem. You will have to go to the audio settings from the menu and select to turn SAP off.

I hope this helps,

Thank you,

Shuttle83
0helpful
1answer

TV problem

Might be as simple as you have the SAP or second audio progam turned on, go in to the sound menu of your set and see if it's set to S.A.P if so turn it to Stereo
8helpful
2answers

SAP

Hi Suezie,

The problem is most likely your SAP being turned On.

SAP was created for audio programing including translations into a 2nd language. On nearly all sets, the SAP being ON will essentially select an alternate audio stream and will de-select or mute the main audio from the channel your are viewing. However not all TV stations have SAP enabled.

I am the Chief Engineer of a TV station in Denver, CO. We are not using SAP so if you selected SAP while watching my station you would get noise or static. There would not be any audio there.

Go to the front panel of your TV and select the "MENU" function. Step through the menus to Audio features and De-select SAP or Enable your main audio and this should take care of the problem. Alternatively you might be able to unplug your set for a period of time and it would reset itself. I used to get calls from elderly viewers when the set wouldn't pick up the UHF TV stations anymore. These were always after a power failure and the set had defualted to factory settings,

Different set manufacturers use different menu schemes and withou a password feature, these menus are so simple a small child playing with those fascinating buttons can change them for you to something you really don't want.

Good luck and write back if you can't find it. The set manufacturer and model number would help me look up a menu tree for your TV set.

Thak you,
Bernarr Howell
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