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00165 no start/boot, VCORE present

G

grmacs

Member
NOt sure why I have no fan spin on this 5V and 3v3 at the fan connector but Fan Rt PWm is 0V. Tried a different fan to make sure I wasn't getting trolled as I was thinking if I have VCORE there should be fan spin. 0V at L3095 DOes that rail need to be present for board to start?

Wondering if this is related to U6100 issue?

I'm definitely confused.
 
2informaticos

2informaticos

Administrator
Staff member
TBT boost will not work until a thunderbolt device is detected.

Did you try to start in SMC bypass mode?

PLT_RESET_L goes high?
Any history fault available?
 
G

grmacs

Member
Won’t start in smc bypass. Plt reset not present. No history but there was some corrosion near u6100. Issue related to rom could prevent board starting? Correct?
 
2informaticos

2informaticos

Administrator
Staff member
Check SPI Bus Series Termination resistors and their traces.
Be sure no corrosion at J6100.

Pin 3/U1950 goes high?
 
G

grmacs

Member
Was some stuff on and near u1950 that I didn't notice prior so I'm glad you had me check that. Now I'm missing SMC_DELAYED_PWRGD. SMC bypass still won't start the board either.

J6100 originally had stuff on it, that was one of the first things I addressed thinking that was going to solve it all haaha. Things look good now also around U6100. There was also corrosion at U6101 and C6101 prior to my post here and both of those were replaced and traces around those have been checked.
 
G

grmacs

Member
I still had nothing on pin 3 but after changing u1950 again it now is booting but still no fan spin haha
 
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