Question about Samsung LN52A850 52 in. LCD HDTV

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Samsung LN52A850 no picture

Just purchased 12/08 when sits overnight or all day and first turn on, get no picture but get sound. Cannot get the menu to appear on screen nor input sources so this indicates not a problem with the cable box but with the TV itself. If I turn the TV off for about 30 seconds and turn back on I get a picture. What could be causing this, Im thinking of just taking this back to Sears. It worked fine for first days but started acting up a few days ago.

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  • ryanandyori Mar 19, 2009

    This is the second set in 3 months I've had issues with. First one the convergence went out on half the screen at the 1 month old mark. The second lost all video exactly as yours did with only audio working at the begining of it's second month of use. I can get a split second of video after turning the set off for 5 min., other than that nothing. Did this happen suddenly while you were watching? Both LN52A850's I had went bad while in use.

  • Anonymous Apr 20, 2009

    my tv 52a860 3mon old turn on have sound but no picture i will never buy samsung again when it did work it was awesome team is coming out to fix will see what is going to be done i rather have a new tv not a repair!!!

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6 Suggested Answers

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SOURCE: samsung tv turning off by itself

I have the same problem of the set turning off and on by itself. There is a circuit in Samsung TVs that would shut it down if a very loud noise occurs in the program being watched, but I have not noticed that correlation. My problem is solved by vacuuming the back panels of the set. They do not seem to have any significant dust on them, but I think the vacuum sucks somewhat inside of the TV and does some good with the fan that is supposed to be cooling the bulb and the mirror. It seems to work for months on end and when the problem recurrs, I vacuum again.

Posted on Oct 28, 2008

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SOURCE: HDMI outlet seems to be bad/ no picture

u need a main signal board replacement

Posted on May 08, 2009

  • 1 Answer

SOURCE: Samsung LCD tv - Turns on and off by itself.

Not sure if this is the same problem, but I just moved and set up my Samsung 40" LCD and it has been going off and on by itself with the worst yesterday every 2-3 minutes. After speaking with a friend of mine who is not in the Tv business but just has good common sense, I determined it was likely a bad power strip. The bottom line is I replaced the crappy power strip (which was fully loaded with all 6 outlets in use) with the higher quality one I had in the other room. The problem is gone. I suspect the power strip was failing or real bad quality........try plugging the tv directly into the wall outlet first. hope this helped.

Posted on Sep 18, 2009

  • 927 Answers

SOURCE: Samsung LCD 40 inch LNT4061

Howdy,
It sounds like you have a Power Supply Board problem. The PSB is the center Board (towards left) after you remove the back off the TV. Remove Board from TV with the 6-7 screws. Replace capacitors CM852 & CM853; 2200ufd 25volts.

Thanks for using FIXYA, big IRISH.

Posted on Jan 02, 2010

  • 1 Answer

SOURCE: Sometimes Loses Sound

disconnect the hdmi cable from both ends it resets the sound signal!!!

Posted on May 10, 2010

freelance-au
  • 131 Answers

SOURCE: i cannot get a picture on the screen of my tv. I

Hi
Firstly and would remove all the leads from your TV and check them. If after checking your HDMI leads etc... and its still the same then i would reset the TV to the original Samsung settings. This is completed on your remote control by the following........

Turn your tv to standby, on the remote when in standby press the keys on the remote in the following order........ INFO.........MENU..........MUTE.........POWER ON.

You will now notice the picture comes on with the engineers settings in the background. With the direction keys on the remote scroll down to number 12 (RESET) Then press OK or the right direction key, Your tv will switch off and load the Samsung factory settings. Switch the TV back on and go through the setup procedure.Once completed then try your HDMI again.

If it is still failing then there is a strong possibility that your Eeprom IC on your main AV Board is corrupt and needs replacing. This should only be attempted if you have good soldering skills as they are Surface mounted and very small.
My advise if your skills are not that good is just to replace the main AV board (Scart Board) these usually sell for around £50 but WILL solve your problem.

I have gone trough everything i know here that would cure the fault, most times one of the above three will cure this, but im afraid other times its just time for a new AV board.

Hope iv helped some people out here.
Any comments or thumbs up appreciated.

Posted on Nov 18, 2010

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Hello, is the TV connected to a cable or satellite box? If so how is it connected via HDMI or Component cables?

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This is an easy one ,, i had the same problem myself

you either need to upgrade your scart leads because there leaking interfearence into your tv or move your sat/freeview system abit further away from your tv..and dont place anything ontop of your satbox ,

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There is an aspect ratio setting in your menu options. You will have to change the aspect ratio so you get a normal screen.
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If by slight chance it doesn't, you will have to remove the back of the tv and find the manuyal adjustments for it.
All newer Tv's have the aspect ratio/picture change setting.

Jan 17, 2009 | Samsung LN52A850 52 in. LCD HDTV

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