Chosen Solution

i’d like to get a power supply board (flextronics) for my 27" thunderbolt display. are these for sale? are they same is what is in a 27" iMac?

This should still be under warranty. If it is, I would certainly get the extended AppleCare warranty.

Hi Power supply board part numbers are: 661-6048, 661-5543. I found boards available for sale on ebay and maybe available for other apple spares suppliers if you search using the part numbers.