Chosen Solution
Hi dear ifixit users! I have an Problem with my Surface. It’s not turning on anymore after someone changed the screen on it. I quickly dissasembled it and spotted these 3 diodes that looked burned (I circled them in for you too):
Now my questions is can anyone tell me which diodes these are? I want to try to replace these 3 to see if it works again. It’s currently not even turning on even with the charger plugged in. The Charger lights up tho. Do you guys think this might be the solution that fixes it? Or might be there something that is also broken that doesnt let the surface start? Thanks in advance Update (04/21/2018) (Here I will attach any extra Pictures that are asked to keep the first Post clean)
@md20 for now I would stop trying to do anything with this board. It will be complicated to find the right parts since a schematic and/or board view would be needed for that. Those are still a bit hard to come by. Also, you must consider the reason why those components have failed. There could be further underlying issues with the board. Yes, I do agree that the failed components are a reason why you cannot get any signs of life from your Surface pro 4. Post some clear close ups of those components for us to see.
You already have spear parts just look at the picture
No, this is not what I meant. The copper pad under the left diode pin was damaged due to the heat of the burned diode or the desoldering. Therefore also a new diode does not fix the problem because the left side of the diode is just open, connected to nothing. But I think I found the answer myself. The left side of the diode is connected to right side of the capacitator cluster a little to the left of the diodes, See picture.
Actually, I found this by beeping through a damaged board so I cannot finally confirm this. If anyone can confirm this would be great! The pad below the left diode connection is very small and only connected through a via. It is NOT connected to the area directly around which only becomes obvious if you take a very close look. So make sure to ONLY connect the left pin of the diode to the capacitator, NOT the area around.
Hello everyone. I have a question connected to the replacement of the diodes. Does anyone know where the left pad of the battery diode (upper one of the two) is going to? Or maybe can check it quickly? I have a mainboard here where the left pad seems to be damaged by the burned diode or the desoldering. Thx
Hope it is helpful for you
