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Dr.Fiero

macrumors newbie
Original poster
Nov 17, 2023
2
0
Canada
I've scoured all the usual sources online, and can't find a schematic for this A1407 (27" Thunderbolt display). it has the Lite-On power supply (not the Flex-whatever-it-was).

Board PN is 614-0505 / PA-3251-31

There's no bulged caps, fuse is OK (pretty sure there's just the one?!), bridge is ok, none of the usual magic pixie escape smells. I picked this up off a chick who told me it 'just stopped working' with no spitz-n-sparkin, smoke, etc.

Are there common failure points on these? Like the pair of MOSFETS under HS2&3? Those look like the switches for the transformer anyhow (I was hesitating to tear into it until I asked around here!).


Thanks!

IMG_3291.jpeg
IMG_3292.jpeg
 

Dr.Fiero

macrumors newbie
Original poster
Nov 17, 2023
2
0
Canada
Aaaaand in answer to my own question.

Here we go.
 

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