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820-00239 A1706 20v 2.20amp no power

Jeffotskie26

Jeffotskie26

Member
820-00239 A1706 20v 2.20amp no power

hello i have this model with no visible watermarks
the board cpu is overheating got 20v 2.20amp looping to 1.37amp no fan spin
i didnt see any shorted caps

i have voltages:
ppbus_g3h 13v
PP3V3_G3H 3.4v
PP3V0_G3H 3.0v
PP3V3_S5 3.3v
pp5v_s5 5.1v
PP5V_S4 5.1v

PP3V3_SUS 3.3v
PM_PWRBTN_L 3.3v
PM_RSMRST_L 3.3v
PM_BATLOW_L 3.3v
PM_DSW_PWRGD 3.4

when triggering SMC_ONOFF_L drop pulse at PM_PWRBTN_L at same time from 3.3v-0.3v
PM_RSMRST_L 3.3V steady


PM_SLP_S5_L 3.3v
PM_SLP_S4_L 3.3v
PM_SLP_S3_L 3.3v
PM_SLP_S0_L 3.3v
PM_SLP_SUS_L 3.3v

is it PCH issue? is there something that can do? or just waste time only?
 
Last edited:
2informaticos

2informaticos

Administrator
Staff member
You should have all voltages present on the board.
Post final CPU core voltage; do you note any drop from 1V to 0.6V there?
 
Jeffotskie26

Jeffotskie26

Member
i didnt get voltage on L7430/20/10 their diode to ground is 0.005
the rest seems good.

but i test on working board L7430/20/10 has no voltage too.

L7210/20 1.0v stable
 
Last edited:
2informaticos

2informaticos

Administrator
Staff member
Seems that board stays on, but doesn't boot.
CPU core drops to 0.6V normally.

Did you check external video and USB activity?

Try known good BIOS, just in case.
 
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