Search results

page 6 shows cpu configurations 0-16 but neither page 6 or 132 show what specific cpu each 0 -16 configuration is supposed to be

Which resistors should I be looking for? This board originally came with a i9 2.4GHz CPU The donar board which I pulled the CPU from is a i7 2.6GHZ. Is it possible for this CPU to still work if some resistors were changed in this case?

What is the purpose of the donar board configuration? When the board is powered on I do not see CPU core go to 1v. It starts at 0.2v and goes up to 0.6v

The CPU is a i7 2.6GHz going on a board with 64GB ram 1TB SSD and 5500M GPU. How do you tell which resistor configuration this is based off the two pages??

When I search CPU strap nothing shows up in the schematic. Do I need to use different wording to find it or does this board not have CPU configurations strap?

CPU replaced. L7211/21/31 is now 0.300v-0.520v fans spin but still no caps lock light or screen activity. Completed DFU restore successfully. This board came with a i9 but it was replaced with a i7. Do any resistors need to be changed when changing to a different CPU?

Replaced U7100 and U4710 but no change

So in this case it’s either a bad U7100 or CPU?

CPU_VCCST_PWRGD also measures 0.16V on a good working board without battery

ALL_SYS_PWRGD and PP1V05_S3 are present. CPU_VCCST_PWRGD 0.16V

Yes board is tested alone on the desk. No damaged components. Board looks pristine

PPVIN_S0_CPUVR_VIN 12.65V PP5V_COREVR_VCC 5V CPU_VR_EN_R only 0.16v

Is there anything else you would try before replacing the CPU next in this case ?

PM_SLP_S3_L also had a partial short so replaced U1200 now have 1.8V PP1V8_S5 along with 3.3v on PM_SLP_S3_L but no changes. Performed another DFU restore. L7221 is a steady 0v from when board is powered on

PP1V8_S5 is 0v diode is 0.285 but on a good working board diode is 0.345 Should voltage be injected to find the partial short?

I checked again and for a few seconds at times a small amount of voltage will appear but it never goes up to 0.7V

L7211 stays at 0v when the board is powered on. No voltage from when the board is first powered on or even after a couple minutes

LA950 0.753V LA870 1.353V LA860 1.353V LA850 0.872V LA750 0.715v L7231 0V L7330 1.053V L7221 0.253V L7330 1.053V L7221 0.253V L7211 0V L7420 0V L7410 0V

Also disconnected angle sensor to rule out but no change

This arrived with no liquid damage but seems to be brain dead. Fans spin but no chime or caps lock light. Screen remains black with no image. Tried a a DFU restore since data is not needed which completed successfully but no change. What should be checked next?