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i lose fan spin when i replace R8165 R8166 Should i be losing fan spin as i replace the pwrgd resistors? As the resistors went in ALL_SYS_PWRGD went away. ALL_SYS_PWRGD seems to get pulled down when i replace either of the resistors which is strange because wouldnt that mean 2 power rails...

replace R8165 ---->FAN SPIN GONE ALL_SYS_PWRGD GONE R8166 --> FAN SPIN GONE & ALL_SYS-PWRGD GONE please note that with all resistors off PIN 1 R8165= 0.1V --->P5VS4RS3_PGOOD U7501 is also 0.1V U7820 PIN 2: 3.33V 3:0.1V (not short to ground) 6: 0.8 V ----> should be 1.8V (not short to...

is the fact that cpu voltages are not present expected?

OK you were correct Removed U1950 cleaned pads Carefully replaced Now with fan spin Stable ALL_SYS_PWRDGD AT 3.33 PM_SLP_S3_BUF_L STEADY at 3.33V I still don't have voltage on CPU coils...but i got fan spin and stable voltages as above Plan: PUT BACK: R8166 R8165 R8164 R8168 Q8150

S0 PULSING S3 PULSING PM_SLP_S3_BUF_L PULSING 0--->3.33V-0--->3.33V Fan intermittently will do a quarter spin BUT AT U8180 PIN 4: i will get a steady 3.33 randomly with FULL FAN SPIN!!! IF PM_SLP_S3_BUF_L STEADY at 3.33V= fan spin

removed: R8166 R8165 R8164 R8168 Q8150 ALL_SYS_PWRGD PULSING : 0 -->3.33V--->0 --->3.33V

R8167 is a pullup resistor here remove R8166 R8165 R8164 R8168 see if all_sys_pwrgd appears

how could. get fan spin then nothing

I soldered and resoldered U1950 5 times. I even ordered a brand new chip and placed that there. The ALL_SYS_PWRGD is missing which I assume is very bad if this board has any chance of starting. Q8150 removal to see if it helps? Should I go back to measuring all power rails again or maybe look...

OK now I am not getting anything on 1&2 I put a brand new U1950 in place 8: 3.42 V 7: 0 WTF? I had fan spin before even ALL_SYS_PWRGD is 0.1 V at pin 1 I thought i was close but this is bad I think Maybe Q8150 is bad? 6:3.29V nothing at pin 4 Q8150 How can U1950 work with no...

U1950 1: 3.33 2 3.33 3: 0.12 5:.90 6: 3.42 7: .66V pLEASE note I soldered the U1950 on backwards at first, realized my mistake and fixed it I even used a brand new U1950 That was my clumsiness This is an AND gate so 5 & 7 have to be 3.42 V correct 1&2 are 3.33 so this chip is not outputting...

U1950 pin 8 looked burned I cleaned it , pad was still there replaced the chip will check voltages

Good news, changed U1950. Fan spin!! But still no boot and still 0 volts on L7320 But it feels like progress with fan spin and PP0V6_S0_DDRVTT now has 0.6V

Post ohm value to ground at L7310/20----> 0.3 O Do you have 3V at pin 7 of U1950? ----> 0 V 8: 3.43 1: 0.12 2: 3.33 U1950 does have corrosion at PIN 3 &4

MEMVTT_PWR_EN :0V at pin 17 U7400 U1970 ----> NO SHORTS 6:1.20 4: 0 V so no output here ----> MEMVTT_PWR_EN R1970:330 kO 1: 3.3 V 2: 0 V CPU VCORE: R0860: 0 V L7320: 0 V on pin 2 :-( U7320 6: 5.09V 1: 0V 2: 4.78 3: 0 5: 0 7: 2.04 1: SHORT TO GROUND ON PIN 1 U7320 CPU_VCCST_PWRGD :0...

You mean change Q8150?

Green light on charger/ goes to orange. No fan spin. No liquid damage. PP5V_S0: 4.95V PP3V3_S0: 3.30 V PP1V5_S0: 1.5 V PP0V6_S0_DDRVTT: 0V at pin 1 C2700 U7400 PIN 13 was 0.18V to ground in diode mode but ONLY 336 Ohms in Resistance mode All the other pins (except ground pins of course) were...

anyone have a vendor recommendation?

Can anyone comment on the quality of aliexpress displays. I don’t think I have the skill to replace the lcd only by taking apart the whole assembly...

Yeah temps are normal at idle 42 New heatpipe 47 playing youtube looks good