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R7403 was open, replaced but same problem.

Found a broken trace on U7201, fixed it and board turns on now. But CPU voltages not present. ALL_SYS_PWRGD: 3.3V Could it be GPU related?

Hello -No turning on. -Customer found signs of corrosion and cleaned the board. -Sometimes (1 of 10 times when I plug the PSU) I get green light for 2-3 seconds. -Tried with another jack board and issue persisted. Measurements with no Green light: PP3V42_G3H: 3.4V SMC_RESET_L: 3.37V...

Removed Q7950 and still ALL_SYS_PWRGD: 0V. Can you explain the ALL_SYS_PWRGD? I need all of the yellow voltages to create ALL_SYS_PWRGD right (see attached)?? U7960 is no present on the Board. P5VS3_PGOOD: 0V (I replaced U7201 and same) P1V5S0_PGOOD: 0V

Replaced U7600 and now I have 1V05_S0=1.09V Still no CPU Voltages VR_ON: 0V

Diode mode to ground at L7630: 0.032V U7600 Pin 13: 5.07V Pin 14: 5.07V Pin 3: 3.32V

More info: PP1V8_S0:1.8V PP1V5_S0: 1.54V PP1V2_S0: 1.22V PP1V05_SUS: 1.18V

Hello. Customer insists on the dedicated GPU. I have replaced GPU ( moved R8610 to R8612 and soldered 10K resistor in place of R8613 since I am using a 216-081005). But I am not getting PPVCORE_S0_CPU. PPVCORE_S0_CPU: 0V PP5V_S0: 5V CPUIMVP_VR_ON: 0V PP1V05_S0: 0V CPUVCCIOS0_EN: 3V

You were right. I was getting 3V on PPVCORE_GPU_REG_R. Replaced Q8950/51, C8956 and U8900 and now I have 1.1V on PPVCORE_GPU_REG_R (Is this ok?). Currently not GPU Soldered. What else should I measure before installing GPU?

What else should I have mesured? With Q8950 removed I powered up the board, green light but obviously no video. Measured all coils and nothing extrange found. PPBus_G3H= 12v. What is the normal voltage value of PPVCORE_GPU? Currently I have the GPU out, what should I measure?

Client needs the Dedicated GPU. I bought a donor board, replaced Q8950 and when turning on the GPU gets ultra hot and the board takes 4A. I imagine death GPU? Can replace the 216-0810084 with a 216-081005?

Any suggestion?

Hello. I just received the "new" GPU, replaced it and now the board has video (I can see the folder) but looks bad. (See attached) Could it be bad soldering? Or bad GPU?

After removing Q8950 the short is gone. Unfortunately I do not have one to replace it. If I disable the GPU (using dosdude method) could I leave the board without that Mosfet?

Hello. I have this 820-2915-B, no power. It takes 270mA from the PSU and GPU gets hot. PPBus_G3H=1.2V PPBus_G3H= 6 ohms to ground. I have 0.2ohm between F7040 and L8920. Any advice? Thanks!

Thanks for your support, 2informaticos. I will replace the complete board.

Same resistance afer 15s. I removed L7310/20 to discard short on Q7311/21 and still have PPVCC_S0_CPU shorted.

After measuring what you mentioned I noticed I have 0.2ohm to ground on L7320 and L7310 -PPVCC_S0_CPU_PH2: I have 1.7v for 40mS. Dead CPU? :/ Should I try Inject voltage? Ultrasonic cleaner?

I forget to mention. I tried with 2 different SMC from 00165 Boards and the same.

Hello, I have this 00165 Initial status: -Liquid damage around R7523, R7520 and R7521 (Close to U7501). -PP3V42_G3H shorted to ground due to bad SMC. Repairs: -R7523, R7520 and R7521: replaced -SMC Replaced Current Status -PP3V42_G3H: 3.42V -PPBUS_G3H: 8.60V -PP3V3_S5_REG_R: 3.3V...