Here we have a thirty two inch Samsung LCD TV.
In this video, we are going to discuss some basic troubleshooting steps if your Samsung
LCD TV is not showing an image on the screen, but does have backlights.
In most Samsung LCD TVs, we have four boards.
We have the main board, the power supply board, the backlight inverter.
The backlight inverter can sometimes be covered by a plastic or metal shield.
We also have the T-con board, the T-con board can also sometimes be covered by a shield.
Click the link in the video for more information on the basic functions of these boards.
If you have no image on the screen of your Samsung LCD TV, you will want to first, run
the flashlight test to see if your TV has backlights and an image on the screen, when
pointing the flashlight at the screen.
Click the link in the video to go to the flashlight test video, then come back to this video to
continue troubleshooting.
After running the flashlight test, you have now been able to determine if your TV has
backlights or not and if your TV has an image on the screen while using a flashlight.
If your TV does have backlights, but no image on the screen, continue watching this video
for troubleshooting help.
The first thing you will want to do is check the t-con board and the main board, and give
them a visual inspection looking for any burnt or damaged components.
Here are some examples of what a puffy capacitor or burnt or damaged component will look like.
If you have any damaged components that look this way, you should replace the board.
If there is not a replacement board available, you can also try replacing the individual
components or purchasing a repair kit.
Removing and installing new components requires the ability to be able to solder.
When looking for damaged components or burn marks, you can also look at the bottom side
of the board.
You would simply, just need to disconnect all of the cables and then remove the screws
that hold the board to the panel.
Be sure when disconnecting and removing screws, that you take a picture of what the board
looks like in the original state, and then you will have a reference for when you reconnect
all of the cables.
If you do not find any damaged or burnt components, then you can also check the LVDS cable to
be sure that it is seated properly and that there is no damage visible on it.
Here is an example of what an LVDS cable looks like.
If you do see visible damage to the LVDS cable, you can search your TV model number on our
website to try and find a replacement.
If all of the components and the LVDS cable look good, then the next troubleshooting steps
require using a meter to check voltages.
If you are not able to check voltages, then the problem could either be with the main
board, the t-con board or the TV panel.
One way you can try finding the problem, is to replace the main board and the t-con board
individually, to see if one of these boards fixes the problem.
This would require you to purchase both boards and then see which one fixes the problem or
purchase them individually and see which one fixes the problem.
If you are going to purchase multiple boards and replace them individually, before purchasing
be sure to understand the return policy of the company you are purchasing from, as there
may be restocking fees or parts that are not returnable.
Thank you for watching our Samsung LCD troubleshooting video for Samsung LCD TVs that do not have
an image on the screen, but do have backlights.
Here are some other videos that can help with Samsung LCD TV repair troubleshooting.
Click on any of the links to view the video.
If you have any further questions regarding your repair, simply post a question in the
comment section below.
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