Samsung LED only lights when mainboard disconnected ue48h6400aw

[zoidberg123]

Hiya,
I have an LED TV that died - when plugged in the power light blinks 7 times and the screen is dark. I disconnected the mainboard and the TV lights up when plugged. If I leave the mainboard plugged in and remove either side of the tcon, screen lights up (with nothing on it).

I replaced the tcon and the same is still true. Does this mean it's definitely the mainboard and I should order one? Is there a way I can test it to confirm?

Thanks,
Gil

[William1967]

Re: Samsung LED only lights when mainboard disconnected ue48h6400aw

Under the t-con you can find 2 elongated strips, on these are various capacitors of which 1 can be defective which is easy to measure. Just measure whether there is a short circuit.