Hi, zoelechat! Thanks for your reply. Yes, I've been reading through the topic you mentioned, even before posting here. I felt really tempted to build up that cable and trying, but the problem is about the time it would take for someone that *may* have some skills.
I need to get the TV fixed soon. Once I did it, I can try to recover the board. TV is not mine, so I have to put it back working ASAP.
I saw a lot of boards for sale online here in Brazil and found out the part number for almost all of them is BN91-10540V. Same part number for a range of different models (UN32F5500, UN40F5500... That is, UNxxF5500), but all models end with "AXZD".
Just for the record, my model would be decoded like this (according to
http://www.samsung.com/uk/support/skp/faq/1052003):
U = LED
N = North America
40 = 40 inches
F = 2013
5500 = series
A = says something I don't know about "feature design"
GXZ = says something about "manufacturing information"
D = could be an additional meaning to the above information
I believe there are some differences between part numbers according to the model suffixes, as BN91-10540V seems to apply only for local (Brazilian) TVs... Language? Signals decoding? Firmware versions? I really don't know.
To be sure, I think I'll open the TV and see the current board sticker.
Again, thanks for your quick reply!
Alex.