[SOLVED]820-3437 smc mode burned probe points

ytesfay80

Member
I have a liquid damaged 820-3437. When I plugged in the charger for the first time it spun for a couple seconds then turned off. The fan no longer spins at all when I plug the charger in.
The I/O board looked to have some damage to it so I tried with a new one and still the same issue. When I took the board out the only liquid damage I could find was by the SMC.

I removed the edge bonding completely put some flux and heated the area. I see that the 4 SMC modes (SMC_TDI, TDO, TDS, TCK and SMC_INT_L) and the probe points next to them are gone.
I try putting some solder on the point but there is no pad so the solder is not sticking. Also there is no continuity from the probe point to the resistor.

In order to repair this do I just scratch at the traces and run a wire to the resistors?
 

dukefawks

Administrator
Those pins can be left unconnected and it should work just fine. I'm not sure about SMS_INT_L though, that may need fixing.
 
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