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RCA 27" TV Ch M134C Service Menu Information

Hi, I have in my service shop, an RCA TV 27V412T chassis M134C that I can not set the TV sound for stereo. It stays in "MONO" (on a channel with stereo sound) . I can change the sound mode (eg. Speech, Theater, etc.). Pressing "MTS" button on the remote only causes a display, "CATV 4 MONO" to appear on the screen. "MTS" is suppose to allow me to select "Mono", "Stereo", or "SAP".

I can access the sound settings, "Vol, Bass, Treble, Bal, and Sound Mode" via Menu.

I have SAMs Photofact 5234 and know how to enter the Service Menu, but there is no information regarding Menu 10 "Mode4", "Mode5", "Mode6", etc.

Do you know what the "Mode(s)" (Service Menu #10) represent?

Thank You in Advance, John

Reply to
jaugustine
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I hate to sound like Mister Obvious but are you sure there is a station broadcasting in MTS?

That was the old analog broadcast system, I know there are a few LPTV stations left but are any of them really using MTS?

I'm just saying, unless the set is seeing a stereo MTS signal on an analog channel, I don't think you can select any other mode besides mono.

-bruce snipped-for-privacy@ripco.com

Reply to
Bruce Esquibel

Hi Bruce,

My own RCA TV, a similar model, uses the same remote and when I push the MTS button, sure enough there is the correct menu, "Stereo, Mono, etc." which is set for "Stereo".

I don't get this with my customer's TV.

John

Reply to
jaugustine

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Maybe it ws a cheaper version of your set, and does not have the ability to do stereo.

Reply to
hrhofmann

Well, just because they are similar doesn't mean anything these days. Odds are, even if they were the identical model, made just a month apart, there probably was some software update between them.

It seems to be one of those tv's with a central cpu (IC101) that calls all the shots and a handful of support parts.

Anyway, looking at your original question, about the service menus, it looks like from the RCA manual, only Menu 1,2,3 and 8 can be adjusted or changed.

All the others including #10 "cannot be adjusted". So if you think a solution is there, you can't really do anything about it.

I mean you are probably right, there is something wrong with the audio selector, but it's one of those tv's, based on age and cost where if it has sound at least, might as well pack it up and leave it be.

It doesn't appear to be an ATSC model, so trying to fix the MTS stereo selection on it really seems pointless to me. Like I said before, there may be a few lptv stations left, but I really doubt if any of them are doing "stereo" anymore.

-bruce snipped-for-privacy@ripco.com

Reply to
Bruce Esquibel

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