Samsung LN55C630K1FXZA Black Screen

[sekellogg]

Samsung LN55C630K1FXZA 55 Inch.

Sometimes when I turn it on it is fine, but much of the time the screen will come on for a few seconds and then it goes black. There is still sound. Reading through these threads I checked the picture by putting a flashlight against the screen and I can very faintly see the picture.

I have seen the recommendation to replace capacitors for other Samsung's with a similar issue, but mine look ok. And suggestions?

Thanks in advance!

Steve

[budm]

Re: Samsung LN55C630K1FXZA Black Screen

Post good clear pictures of the back side of the TV so we can see what we are dealing with first.

[sekellogg]

Re: Samsung LN55C630K1FXZA Black Screen

Attached.

Let me know if there is something else you need to see.

[budm]

Re: Samsung LN55C630K1FXZA Black Screen

Pictures of the whole back side of the TV so we see all the boards. Then straight shot pictures of each board.

[sekellogg]

Re: Samsung LN55C630K1FXZA Black Screen

Please let me know if more are needed. As you can tell, I am a novice here.

Appreciate your patience and time.

[sekellogg]

Re: Samsung LN55C630K1FXZA Black Screen

Should I go ahead and try replacing the capacitors from the power board?

[budm]

Re: Samsung LN55C630K1FXZA Black Screen

You may have bad power supply/inverter board, or Balance board (the big log board where lamps are connected to), or bad lamps.
Unplug the unit from the outlet, then remove the cable between the power supply and the main board, then apply the power and see if the backlights will stay on.
Also need the P/N of the power supply/inverter board, it should be something like BN-XXXXX.

[sekellogg]

Re: Samsung LN55C630K1FXZA Black Screen

Something to note as I have been looking at this today... It seems the picture does not go black as often if I power on the tv with an unplugged source. The picture stays telling me there is no source plugged in.

I will try your suggestion and get you the P/N.

Edit to add: The main board would be the board with the HDMI connections?

[budm]

Re: Samsung LN55C630K1FXZA Black Screen

"The main board would be the board with the HDMI connections?" Yes.

[sekellogg]

Re: Samsung LN55C630K1FXZA Black Screen

With the main board unplugged from the power supply, the tv does not turn on.

The BN is BN44-00342B