Question about Samsung LN-S4095D 40 in. LCD HDTV

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I have a samsung lcd tv model LNS-4095DX/XAA. I am getting snowy particles throughout the image. The picture looks great except for the pixel looking particles throughout the screen. I have already replaced the power supply due to some bad capacitors. It was alot worse before the new part. Do you think it is the T-Con or main board that needs replacing? I checked all the connections and tried different cables to see if it got better, it did not.

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: Which Replacement Power Board for LNT4665F Samsung LCD TV?

Howdy,
It would be a lot cheaper if you just replace the two caps that have gone bad. Just get a cheap solder pencil from the store and about an inch of solder and you are in business.
The Power Supply Board 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.

Thaks for using FIXYA, BIG IRISH.

Posted on Jan 02, 2010

SOURCE: power light comes on and clicking is heard but no

your problem is more a defective y board with y buffer boards one of them is short

Posted on Oct 26, 2010

eagle338
  • 4889 Answers

SOURCE: I have a 46" Samsung LNT4661FX / XAA LCD TV. My

The 6V difference would matter depending on the location of the capacitor. If there is no voltage regulator circuit and if its in the circuit that goes into the main A/V board then I would thing that it has damaged if not fried some components into the A/V circuit. If you can get me a picture of the circuit where the caps are I can have a look and tell you if its due to that.

Posted on Jan 20, 2011

  • 718 Answers

SOURCE: I have a 46" Samsung LNT4661FX / XAA LCD TV. My

Good fixes. Sometimes the connector for the cables running from the LCD to the T-CON do not make good contact. You might try moving them around to see if it affects the picture. You can even carefully disconnect and reconnect them.

I have come across one person that fixed a display by resoldering as many joints as possible on the main board.
When these boards are made they use a wave solderer and with the new RoHs standards and shoddy workmanship a lot of 'cold joints' are developing. If you do this, use RoHs compliant solder.

Posted on Feb 19, 2011

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This will not be easy to be 100% correct as to what part is bad as you can see in my pictures here.
It can be bad main board, T-CON board, Bad LCD panel.
http://s807.photobucket.com/albums/yy352/budm/LCD%20panel/

I would try new T-CON since it is the cheapest part, not worth to repalce LCD panel.

Basic troubleshooting guide here:
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http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
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Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Parts: www.interliquidparts.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

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