820-3462 not always power on

[Glenn]

I have a liquid damaged 820-3462 board here, it's liquid damage around smc I have cleaned up all nasty resistor and capacitors.

The board is not always powering it's like depending on witch day it is..

Could it be bad smc?

 

[dukefawks]

More likely would be corrosion under the SMC or a corroded resistor/trace. SMC itself will be fine.

 

[Glenn]

Thank you for reply Duke.

Want to look for more corroded resistor / track later.
If not, the next step will be smc reflo