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BIOS chip is correctly soldered 100%. This is not too small component , perfect orientation. looks very good.

NO RIPPED/MOVED register near bios. I checked the following value PPBUS_G3H = 12.26V PP3V42_G3H = 3.48V SMC_RESET_L = 3.3v SMC_BC_ACOK = 3.4V ADAPTER_SENSE = 3.4V P3V3S5_LL = 0V SMC_ONOFF_L = 3.4V

I tried to swap good bios after that now i see no green even i swap again original bios still no green light , PPbus G3H is 12.23v. This is a nightmare now.

PM_SLP_S4_L =3.3v stable if trigger then 2.4v

I made a mistake ( measured it before in mv). After right measurement i found 3V at PM_PWRBTN_L , all times and drop it 0.353v ( stable) if SMC_ONOFF_L is triggered.

Just touch the ground for a moment, like pressing power button. PM_PWRBTN_L must drop and go back to high level instantly. ## I found PM_PWRBTN_L OL and when touch the ground it goes up quickly 373 mv and drop 353mv very fast.

I found 350 mv at PM_PWRBTN_L after Solder a wire on SMC_ONOFF_L. I dont have ocps so use Fluke 114 True rms.

"Trigger SMC_ONOFF_L " it means short R5015/16 pins and check the V at PM_PWRBTN_L.?

charger mode only: SMC_DCIN_VSENSE=2.08v SMC_PBUS_VSENSE=1.45v Trigger SMC_ONOFF_L and check any reaction at PM_PWRBTN_L." how to do this checking? I could not find any missing components. Thanks.

SMC_DCIN_VSENSE=2.08v SMC_PBUS_VSENSE=1.45v

Voltage at U7000, charger and battery connected. pins 9= .47v pin15=.048v R7021/22=16.42v both, 10 ohm both. R7051/52=11.91v both, 2.4 ohm,.2 ohm respectively.

PM_BATLOW_L=3.24v yes ,start in SMC bypass mode

SMC_ADAPTER_EN=3.46v PM_BATLOW_L=unable to measured. 3V3_SUS=3.3v SMC_ONOFF_L=3.48v PM_PWRBTN_L=3.47v Start in SMC bypass mode , i dont know how to do this check, could you please show me how to do that checking? Thanks.

820-3115 Green light but not turn on. It was working unit i just changed hinges cover after that not turn on, only green light. PPBUS_G3H=12.57v Not turn on with a charged battery. PP3V42-GH=3.49V 3v3_S5=3.29v PP5V_S5=5v PPVIN_SW_T29BST=2.5v Any help please.

Changed U6990 and now see the green light and battery also detected , all tested passed. Thanks for your help.

Volteges for U6990: PIN9 P3V42G3H=1.1V PIN8 P3V42G3H_FB= 4.9V PIN7 PPVIN_G3H_P3V42G3H=16.6V PIN6 P3V42G3H_SW=1.1V PIN4 PPVIN_G3H_P3V42G3H=16.6V PIN3 P3V42G3H_TON=11/12 NOT STABLE PIN2 P3V42G3H_FB=4.9V

Checked all solders looks very good and no missing any components. Voltage of ISL pin1=0v pin2=16.58v pin3=3.95v pin9=0v pin12=1.1v pin13=0.8v pin14=0.8v pin15=0v pin19=5v pin20=5v pin28=16.46v Registance ( ohm mode) betw pins 17/18=2.9 ohm Registance ( ohm mode) betw pins 27/28=20 ohm

PPBUS_G3H=.0.5v resistance to ground at SCL=.462 and sdl=.461

Try another ISL6259 and now see no green light

traces and solders for pins 10/11 of ISL6259. looks good. resistance to ground at SCL=.455 and sdl=.456 exact voltage for PPBUS_G3H=12.4 v .Thanks.