Power ON the Samsung LE40S86 BDX/XEE LCD TV was not possible.
Remove the 16 Philips screws from the back panel.
Photo with the back panel removed.
A photo of the power board. Remove the 7 Philips screws to get to the soldering side of the PCB.
There was a problem with 3 of the capacitors on the power board. The capacitors location is marked with a red ring in the first photo. The old and not working capacitors had the values 1000 uF, 10V and 105C. I replaced them with 1000 uF, 25V and 105C
I put the TV together in reverse order and switched the power on. Hey presto, a working TV :)