SOURCE: how hard it is to replace by yourself main board Samsung LN-T4065
You need to do some more diagnosing of the problem. If you get sound and change channels take a bright flashlight and place it again the screen. Look for an image around the edge of the flashlight.
If you see an image that means the LCD controller board (TCON) is probably good.
The problem is probably one of three causes;
1) Inverter board is bad
2) CCFT (cold cathode fluorescent light) are bad.
3) Power to the inverter board is bad. You can also check the connectors.
SOURCE: Samsung TV Power Supply Board
I doubt that moisture damaged the SMPS bd.
There are many circuit boards in your set and it will take a trained samsung tech to find the problem.
SOURCE: Samsung Power Supply Board
The power supply part number is BN44-00159A. You can also download the info from this link. It's the service manual.
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.
SOURCE: I have Samsung UN46B8000XFXZA LED TV. After power
Yes based on your testing it appears that the power supply is at fault solely and you can opt to attempt a repair or replace it altogether. Unfortunately you will not be certain that the main board does not also need to be replaced until you have repaired the power supply.
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The last thing I did was connect a second hard drive to the tv USB. To power it up, I used a double USB cable because only one USB port is dedicated for a hard drive (I think this why the Tv in now fauly). Disconnected the Hard drives but still faulty.
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