Samsung TV: No video, has audio. LED's not turning on?

[Tsmac]

I have a Samsung UN55fh6030 FXZA. For about a week it has been giving me issues with the video. Audio will play but video will disappear. It always started working again until the other day. It's been out for 3 days now.

I'm completely new to troubleshooting (tvs at least), and every guide or video I look up seems to point me in a different direction. The audio works, and I can see picture faintly from extreme angles, and with a flashlight it is visible.

I've checked connections, capacitors and resistors for bulging / burns, I've removed each board and check the backside for burn marks, and I've checked some of the Voltages and grounds out of the Power board. Some of the others are on the inside set of pins on a 90 degree angle connector. How do I check the inside pins that are completely covered by the connector? Carefully backprobe?

My board numbers are

Power: BN44-00556a
TCON: BN96-2749a
Main: BN94-06418c

Where is the LED Driver on this TV? When looking up parts, some included the LED driver on the Power supply board. My tv appears to have the other Power board.

Any help is greatly appreciated. If you need more information / pictures just let me know. Thanks in advance

[Alastair E]

Re: Samsung TV: No video, has audio. LED's not turning on?

Usually its the LED strings themselves that fail.

On some LCD's the LED driver is Inside the panel itself....

Crappy (Or deliberate) design to make 'em difficult to fix--Either way, you prolly need to strip the panel down--Not easy and fraught with disasters, due to delicate nature of the LCD panel and its connecting tabs....

[budm]

Re: Samsung TV: No video, has audio. LED's not turning on?

You have power supply/LED combo board, it has two LED strings driven by two drivers.
You need to check the DCV at the LED connector (you must leave the meter probe at the connector pin) when you turn the TV to if the Voltage will rise up high and then drops down after a few seconds, you will need to do that at each pins.

[Tsmac]

Re: Samsung TV: No video, has audio. LED's not turning on?

Where is the LED connector / how do I get to it. Do I simply untape those boards in the first picture and then use the black tabs to separate this further?

Here's the album: http://imgur.com/a/828EM