Samsung QE50Q60AAUXXH turns off as soon as backlight turns on

[kalemaroni]

Plugging the power in will turn on the backlight after about 5 seconds and then immediately shuts down.

If I unplug either of the two cables with the yellow outline in the picture the backlight stays on and the startup sound plays but no image. Any ideas how to proceed with this please?

[lotas]

And how did you manage to disconnect them, they don't have a connector? You tore them off the buffer board, now how are you going to solder them back in place?

[mrtek]

Plugging the power in will turn on the backlight after about 5 seconds and then immediately shuts down.

If I unplug either of the two cables with the yellow outline in the picture the backlight stays on and the startup sound plays but no image. Any ideas how to proceed with this please?

Did you remove the cable connecting the buffer boards instead of the cables marked in the image?

[Diah]

And how did you manage to disconnect them, they don't have a connector? You tore them off the buffer board, now how are you going to solder them back in place?

Lotas the are U ribbon easy to disconnect one half as usual,
OP you have 2 solder points, on main boards close to the sockets which come from power supply, make bridge between them , then you disconnect the U ribbon you did early at puffer boards , you will see picture and could know which side are defect at panel.. 50 size always i wrote , they are rubbish panel

[kalemaroni]

Did you remove the cable connecting the buffer boards instead of the cables marked in the image?

Oh damn, yes you're right of course, the buffer boards cable is what I should've outlined.

[mrtek]

Oh damn, yes you're right of course, the buffer boards cable is what I should've outlined.

Can you please show how the buffer boards are connected? I am assuming there is only one flex cable. You can apply the tape method on either end of the flex cable. I had similar situation with a 65 inch Samsung TV.

[kalemaroni]

.

[kalemaroni]

Can you please show how the buffer boards are connected? I am assuming there is only one flex cable. You can apply the tape method on either end of the flex cable. I had similar situation with a 65 inch Samsung TV.

Here you go:

[howardc64]

Here you go:

This connection path is harder to diagnose which side is bad because right side (looking from back) buffer boards signal goes through the left side. So no way to disconnect the left side and see if right side imagine is okay. Only if the fault is on the right side, then disconnecting it can potentially it’s the half containing the failure.

[mrtek]

This connection path is harder to diagnose which side is bad because right side (looking from back) buffer boards signal goes through the left side. So no way to disconnect the left side and see if right side imagine is okay. Only if the fault is on the right side, then disconnecting it can potentially it’s the half containing the failure.

I would apply the tape method on the right side and see what happens. I did the same thing on my 50 inch Samsung.
https://www.badcaps.net/filedata/fet...3&d=1752628126

[kalemaroni]

I would apply the tape method on the right side and see what happens. I did the same thing on my 50 inch Samsung.
https://www.badcaps.net/filedata/fet...3&d=1752628126

I'll try this method, thanks for the suggestion. The picture is quite blurry which pins have you taped off exactly?

[mrtek]

These are the pins I have masked but in your case it may be different.