820-3115 no PM_SLP_S3_L

[nate8organic]

have a second 3115. It is missing pm_slp_s3_l i have no pp3v3_en i have no pp5v_s0_en. serious liquid damaged corrosion throughout the board. i replaced anything that looked fried/ burnt. the boards fan spins for a second then turns off. if i smc by pass the fan stay on. u4800 are was corroded. replaced it and no change. ppbus is good at 12v.

 

[dukefawks]

If the fan spins then SLP_S3 must be there. Could be anything, the usual suspects are clock chip or crap under SMC. But if board was corroded all over it can be anything.

 

[nate8organic]

okay thanks. the fan spins only for a few seconds then it stops entirely. i did replace the clock chip as it was nasty and there was stuff near smc so i guess i will try a reflow there. for some reason when tracking down the issue with pp5v_s0 i found that slp_s3 was not there but i must be doing things in the wrong order. i will go through and if the smc reflow/replacememt doesn't work i will replace everything with corrosion near it.
Thanks again.

 

[TCRScircuit]

It is power cycling. Again, Could be anything.

 

[nate8organic]

no no power cycling. just a quick spin and stops. I am aware of that. am going to try the smc and work from there. Cheers