Samsung #LN19A330 Tuner Issues - AVS Forum
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post #1 of 12 Old 06-02-2012, 07:57 AM - Thread Starter
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I have a Samsung model #LN19A330 that was made in July 2008. Recently I have had issues with getting a clear and good OTA signal. I thought it was the antenna but have connected a few with no changes in reception. Seems the tuner in the TV is the problem.

It seems others have the same issues with these Samsung tuners to. I was wondering if there is a way to fix or replace it?
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post #2 of 12 Old 06-02-2012, 08:50 AM
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Only way to tell for sure is swap out the tuner for a known good one. The do go bad sometimes. If it is a standalone tuner, you would be better off replacing it with a newer model.

If using an outdoor antenna and/or long coax, it's possible a connector has gotten corroded or loose somewhere along the line.
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post #3 of 12 Old 06-02-2012, 12:25 PM - Thread Starter
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The tuner is built in and the only connection is the antenna to the TV. DVDs play fine on the TV so I assume it is the tuner or something related to OTA reception.

Where can I get a tuner for this?
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post #4 of 12 Old 06-02-2012, 12:37 PM
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See the tuner (STB) synopsis thread in this same HDTV Techinal sub-forum.

Guessing from the model number, that's a 19" set (?). If so, and if the tuner is bad, you'd probably be better off replacing the set, instead of adding the hassle of yet-anoter-box-and-remote to muck with to watch TV.

To prove if it's the TV tuner or an antenna/cabling issue, borrow a friend's digital TV or digital converter box and try it on the same antenna connection.
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post #5 of 12 Old 06-02-2012, 05:32 PM - Thread Starter
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The TV is a 19 inch, but I would rather fix it then toss if possible.

Something weird happened today. I moved the TV closer to the window and for about 30 minutes it was fine. Then it started dropping the signal like crazy. Any ideas?

Thanks for the Help!
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post #6 of 12 Old 06-02-2012, 07:18 PM
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Where is the antenna located?
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post #7 of 12 Old 06-02-2012, 07:37 PM - Thread Starter
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Close to the window, seems to be fine then just not work.
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post #8 of 12 Old 06-04-2012, 07:00 AM
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That's not unusual for an indoor antenna, especially around this time of year.
If the tuner was bad, it would always be bad.
Also, remember that the "tuner" is just a box with the RF amplifier and mixer/local oscillator, used to amplify the radio-frequency signal and mix it down to a common intermediate frequency, for processing.
There are other circuits that then amplify and process the signal, demodulate it to data, and make video and audio out of it.

I'd try an outdoor antenna first, before writing-off the TV or it's innards.

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post #9 of 12 Old 06-04-2012, 09:07 AM - Thread Starter
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Why is it common to have OTA reception issues this time of the year?

I would like to try an outdoor antenna but I don't know if the apartment complex allows that. I guess I will check.

I have played around with the antenna and it is getting better. Stations that should be strong still have problems though.
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post #10 of 12 Old 06-04-2012, 09:42 AM
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Something might be interfering nearby with reception of the indoor antenna.
Can you post your TVfool results so we can get an idea of what reception is like in your area?

If you have cable, you can plug that in to the TV and do a search of clear QAM channels to see if the tuner works.
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post #11 of 12 Old 06-04-2012, 10:58 AM
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Quote:
Originally Posted by mgold View Post

Why is it common to have OTA reception issues this time of the year?

I would like to try an outdoor antenna but I don't know if the apartment complex allows that. I guess I will check.

I have played around with the antenna and it is getting better. Stations that should be strong still have problems though.

Leaves on the trees sometimes make reception of some channels more difficult. It's also possible that you or a neighbor has a new electronic toy that gives off interference that only affects certain channels. An outdoor antenna would likely solve the problem.

The easiest way to rule out a problem with your tuner is to borrow another TV or tuner and connect it to your antenna in the exact spot the antenna is currently in, and see how well it works.
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post #12 of 12 Old 06-04-2012, 02:31 PM
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You could also look at an analog channel (usually a low-power TV station) that is near the same channels as you have problems with (2-6 are low-band, 7-13 are high band, and 14 and up are UHF, so something in the near range of channels). See if there is a lot of interference in the analog...beats, strong lines, etc.

Often, a computer or other digital device can interfere with indoor reception. Switch-mode power supplies, like in battery chargers and in many digital devices can cause interference. DVR's and some set-top boxes (like for Cable TV and satellite) can often cause noise, too.

You may have just enough signal most times, but the change of season and the time of day can cause a tiny change, enough to drop out the signal. That's called "low margin".
Daily and seasonal variations are normal, and a bit of extra "margin" is all it takes to make up for them.

Ken English, Sr. Engineer, KSL-TV.
"The postings on this site are my own and don't necessarily represent the Company positions, strategies or opinions."
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