Hi yet another 820-2915 b

[Chuck60]

I received a no power board today ive gotten it to power up. now I have quarter fan spin. There was corrosion directly on r7015, r7012 like a drop. The other area was around u5430 just like droplets on each very localized. The PP3v3 goes from .6v to 2v then back to .6v again
ppbus_g3h 12.56v
pp3v3_s3 3.3v
pp5v_s3 5v
pp3v3_s0 .6v while fan is off and 2v when on
L8120 was also a issue it was split with a burn mark
will it boot without it also I don?t find this on my other spare doner boards (820-3115, 820-2936, 820-00165)

 

[Chuck60]

Ok I found the issue someone removed the gpu heatsink and reflowed the gpu and found solder balls fused together
so it?s a parts board.

One question though I have 2 boards that I repaired that will power on with magesafe in one direction but if I reverse the connector to the other side it won?t power on. Not even a green light. I tried several dc in boards but have the same issue. I?m lost with these 2 they are both 820-2915b

 

[2informaticos]

2915 board can still be used without GPU.
Just disable it in BIOS and use iGPU.
Changing GPU is not a good idea, as you will not find a real new chip anymore.

Please open new thread for the other problem...

 

[Chuck60]

Ok
thank you