a1311 emc 2428 DEAD: ONE LED ONLY

P

phantom

Member

Sep 19, 2026

• #1

hello! i've an a1311 emc 2428 dead. only one led. i have 3v on power button.

even using tweezers, nothing happen. could you help me?

 

2informaticos

Administrator

Staff member

Sep 21, 2026

• #2

What is 820-xxxx MLB code?
Do you get 3V3_SUS?

 

P

phantom

Member

Sep 21, 2026

• #3

i would like to not dismantle the board if possible....hoping a simple problem.... i will check for 3V3_SUS i think it could be 820-2492

 

2informaticos

Administrator

Staff member

Sep 21, 2026

• #4

Maybe 820-2494?

Just in case, disconnect J6600 and test again.

 

P

phantom

Member

Sep 22, 2026

• #5

i think the board is 820-2641, i can't find the line 3V3_SUS

 

P

phantom

Member

Sep 22, 2026

• #6

i think the board is 820-2641, i can't find the line 3V3_SUS

• PP12V_G3H
• PP3V42_G3H
• PP3V3_S5
• PP5V_S5

all presents,
PM_SLP_S5_L always 0v

PM_RSMRST_L 3,3vRSMRST_PWRGD 3,3vSMC_RESET_L 3,4vSMC_BC_ACOK 3,4v

PM_PWRBTN_L 3,4v ->0 when press power button

 

2informaticos

Administrator

Staff member

Sep 22, 2026

• #7

Check if PM_PWRBTN_L drops from 3V to 0V when press power button.

 

P

phantom

Member

Sep 22, 2026

• #8

Yes, i have confirmed it before