820-3115-b board , white led no boot..

[turbo]

820-3115-b board had water damage , now fan turns , white led in front of mac keep on , no boot. !!!!


also i notice if i plug in green light still green does not turn into orange , r7402, r7403 is good,

 

[aprendiz]

Remove RAM modules and see if it beeps....

 

[turbo]

Remove RAM modules and see if it beeps....

no it does not beep

 

[dukefawks]

CPU Vcore?

 

[turbo]

cpu vcore?

l7520=1.1v
l7510=1.1v
l7550=0v

 

[dukefawks]

Could be anything, corrosion under SMC/PCH possible.