Samsung UN50H6203AF 50" led tv sounds works but no picture. Backlights light up when I turn it on so I replaced the t con board but still no picture. What's the next step?

SOURCE: One day I turned my tv off and it wouldn't turn

The power board is the usual culprit but I have also seen the main board, T/Con board or the panel itself cause this problem. I would recomend calling a trained tech to figure out the problem. You could spend hundreds of dollars on parts and still not fix it. You can call 1-800-samsung to find nearest service center.

Ginko

• 19396 Answers
• Posted on Dec 22, 2010

SOURCE: I have a Sharp lc-42d62u

Hi.

I do not think that a firmware or software update (if available) will make any difference. If the backlight starts and turns off, then it is either inverter, PSU or circuit controlling inverter (located on main controller board). The fact that you replaced the boards does not necessarily mean that everything is OK with newly replaced boards. I repair LCD TVs and I can tell you that the board swapping method is not effective or good with this kind of electronic. This is not a PC, if you replace all boards without testing, then you may get in more troubles than when you had the initial problem.

The T-con board is regulating the timing of signal to LCD. The T-Con board symptoms are in effect no picture and sound still going, but often the backlight does not go completely off, you usually get a faint flickering backlight. Before replacing the T-con, testing should be done reading voltage in the DC line that goes from PSU to inverter. If there is no DC voltage, then the problem is not the TCon. If there is DC voltage in to the inverter, but no high voltage out from the inverter, then the inverter is usually shot. For safety reasons testing with live power should be done by a trained person.

The other way to proceed is swapping TCon board. In this way there is also the chance that LCD panel failed, that is usually beyond repair.

Regards.

Ginko.

SOURCE: I have sound but no pictue

Make sure the red white and yellow cords are in correct place

SOURCE: I have a samsung lnt4066 led TV with a distorted picture. I have replaced the main board, power supply and the t con board with no success. I have pictures of what the TV is doing and would like to sh

You either have a bad t-con board or the screen is bad. Check to make sure all the ribbon cables are seated fully and connected. Even replacement parts can be bad sometimes, new and used both.

SOURCE: how can I fix a double image my Samsung tv is putting out? I replaced the t-con board and nothing. what step should I take next?

The best step you can take now is to hire a tech. He or she wont replace things that are not defect. They will find the defective part and only replace that. Most of the time I spent more time to diagnose the error, than it takes to replace the defective part. But i diagnose is not made by replacing stuff till it works. In the end you can have defective components for 2 or 3 complete apparatus and it would still no work. Sometimes you can be lucky, but most of the time you are not. You don't have to take my word for that and look how lucky you are.