Samsung PN51D450A2D

[willy3486]

I have a dead Samsung PN51D450A2D I am trying to help a coworker with. What I have found out is as follows. When you plug it up to power you hear a click of the relay. When the back is off and you hit power you see a red LED close to the digital audio jack on the main board with the other jacks. From a search I think this is called a
Main Board BN96-19471A , BN41-01608A.

You also see a flashing green light on the board almost in the center just above the stand where a lot of ribbon cables plug in. I did a search and found it called a T-CON Board LJ41-09475A.


From searching other repairs on this model the TV not turning on it looks to be either the main power supply or the Main Board BN96-19471A , BN41-01608A with all the jacks. I did try to find a voltage on the power supply board but did not get any, I think its more of a issue I didn't check the right spot.

With that said and it does click, have the red light and also the green light that cuts on and off I am thinking the main board. Before I tell the fellow to get this board does anyone have suggestions on this? If anyone has suggestions on checking voltage where would I need to check? I tried to the jacks with pin probes on my meter to get in there but I never seemed to get a voltage. When I use to work on TV sets you still had picture tubes, other tubes and plug in boards. I do work on computer hardware but I am rusty on tv sets and forgot most troubleshooting on them.

[attainteddragon]

Re: Samsung PN51D450A2D

if you disconnect the cable that runs from the p/s to the main board, do you get backlights?

[tvtimmy]

Re: Samsung PN51D450A2D

He has a plasma tv. Its not a tcon its a logic board. There are no backlights either. Its called raster I think. There are youtube videos on this subject that point to the ymain.

[attainteddragon]

Re: Samsung PN51D450A2D

i saw the word t-can and didn't see the word plasma.
plus no pics.

in that case. what do you have for vs and va in relation the the panel label?

picture of the control board and the whole back would help endlessly.

[willy3486]

Re: Samsung PN51D450A2D

Thanks for the replies. As far as what it looks like it is exactly like this one from another post here from what I can tell.

http://farm3.staticflickr.com/2877/1...26d8cdb0_c.jpg

From what tvtimmy said its the ymain board, is this the Main Board BN96-19471A that has the input and output jacks antenna connections? From what I have dug up it seems that what other posts and sites say. I am way too rusty on TVs and they changed so much from when I use to work on them.

[willy3486]

Re: Samsung PN51D450A2D

Update on this TV. From the info here and suggested we ordered the main board. It will now power on and you can hear sound but no picture. Before all we heard was a relay click then it went off. Now you can cut it on and get the red power light to come on and stays on . The board I think that is called the logic board that connects to the main and then to the x and y boards has a green light that flashes on and off, but when you hit the power button on the remote the red light on the front comes on but that green light on the logic quits flashing. I have reinstalled the cables on the new board to see if that is the issue. I don't want to tell him to buy this board or that only to wind up replacing them all and it still not work.Any suggestions?