820-3115 - Green/Orange light, no fan.

[gcain]

Board has bits of corrosion all over. Looks like someone sneezed over it. Ugh.

Green orange light as expected, but no fan spin.

PPBus_G3H = 12.56
PPVRTC_G3H = 3.5
PP5V_S5 = 5.04
PP5V_SUS = 0
PP5V_S3 = 0
PP3V3_S5 = 0



Edit: Should P3V3S5_EN_L be low to be working? It measures 3.4v.

 

[dukefawks]

3V3_S5 should of course be there. P3V3S5_EN_L should be low. G2_EN present?

 

[gcain]

P3V3S5_EN_L = 3.499v

Diode mode on PP5v_S5 @ C7253 = 0.005v Guessing a short on that line?

 

[dukefawks]

Nice how you did not answer my question.....

"PP5V_S5 = 5.04" I doubt a short is there then!

 

[gcain]

Nice how you did not answer my question.....

"PP5V_S5 = 5.04" I doubt a short is there then!

I somehow pasted the wrong line,
SMC_PM_G2_EN is 3.499.

And PP3v3_S5 @ C7253 is reading 0.005v in Diode.... I must have copied the wrong lines somehow. Sorry about that.

 

[dukefawks]

Yeah that would be a short then. Not going to be fun as these is so much crap on 3v3_s5 including the PCH. Inject 3V and see what heats up, I suspect there will be more than one component that is dead. Probably 3v3_s5 went high and killed stuff.