[SOLVED]820-3662 ACOK low.

[Ryanlen2]

Hi!
Minor liquid damage around u3220, U3320 TBT area. DCIN fluctuates slightly and ACOK is low so I have a verrrry dim green light.

DCIN - 16.5V - 16.8V
PPBUS - 12.58V
PP3V42 - 3.42V

ISL

17/18 - 3.4 Ohm
27/28 - 20.9 Ohm
ACIN - 3.8V - 3.9V (fluctuates)
ACOK - 2.5V - 2.6V (fluctuates)
ACOK in Diode - .517

Replaced U7001 and C7008
Replaced Q7180 /Q7010 and C7012, R7011 and D7010.
Replaced ISL 2X
Replaced J7000 because the plastic was broken.

There is no visible damage around SMC.

Thanks! Have good one.

 

[dukefawks]

Resistance to GND on ACOK line? R5187 checked?

 

[Ryanlen2]

Hey Duke.

.643 MOhms on ACOK.
Resistor looked fine. Swapped just in case. Still very faint green light...
ACOK - 2.8 - 3.2V.
Getting 3.3 - 3.4 on pin 5 U7000. Still very faint green.

Guess Im doing SMC on this...


Update - Replaced SMC. Same issue... Not SMC! lol.

 

[Ryanlen2]

Got it. Thanks Duke. I assume your off... Enjoy!

 

[dukefawks]

Is this fixed?

 

[Ryanlen2]

It is. Thank you.