Full name/ Model: Asus Zephyrus M16 / GU603ZW-M16.I93070T
CPU: Core i9-12900H
Onboard 8GB DDR5 4xMT60B1G16HC-48B:A
Problem: This laptop was brought to the shop with the board already meddled with. Last technician (maybe without the right tools) removed an electrolytic capacitor (PCE9203) sensing resistor (PRS9801) and probably flashed both BIOS (U2802) and VBIOS(U7802).
The laptop's behavior is: When connected, it tries to power up. CPU powers on, and (allegedly) the power sequence finishes and goes to S0 (PLT_RST = 3.3V). It consumes 600mA, ramps up to 1.100 A and suddenly goes back to 19ma. Then the process is repeated 1 more time, but this time, after 19mA, goes to 79mA and it doesn't try it again. Power button does shutdown if held for 10 sec. But when unpressed it restarts instead of staying off. (I'm not sure if it is normal or not for this PCH) Also, the power led is ON all the time.
On the first restart PLT_RST goes down to 0V. Then it goes back up after the restart, but after the second restart, when current is 79mA, PLT_RST is low.
I tried to measure DRAM_RST and it is then when I suspected RAM or CPU problem. DRAM_RST is 0V when S5 and 0.095 when S0, so i think it is stuck in reset. That is why it doesn't post. I measured the resistance to ground of the DRAM_RST line and it is 473.8ohms (not sure if it is a normal value).
The original problem reported by the user is that he was playing and then suddenly the screen turned off. Then the other repair shop reported "a problem with the graphics module". Also, 1.8V_AON which powers up the GPU tries to power up but fails (the enable signal tries to get on but goes off immediately) But I think this goes on after DRAM_RST.
Thank you
CPU: Core i9-12900H
Onboard 8GB DDR5 4xMT60B1G16HC-48B:A
Problem: This laptop was brought to the shop with the board already meddled with. Last technician (maybe without the right tools) removed an electrolytic capacitor (PCE9203) sensing resistor (PRS9801) and probably flashed both BIOS (U2802) and VBIOS(U7802).
The laptop's behavior is: When connected, it tries to power up. CPU powers on, and (allegedly) the power sequence finishes and goes to S0 (PLT_RST = 3.3V). It consumes 600mA, ramps up to 1.100 A and suddenly goes back to 19ma. Then the process is repeated 1 more time, but this time, after 19mA, goes to 79mA and it doesn't try it again. Power button does shutdown if held for 10 sec. But when unpressed it restarts instead of staying off. (I'm not sure if it is normal or not for this PCH) Also, the power led is ON all the time.
On the first restart PLT_RST goes down to 0V. Then it goes back up after the restart, but after the second restart, when current is 79mA, PLT_RST is low.
I tried to measure DRAM_RST and it is then when I suspected RAM or CPU problem. DRAM_RST is 0V when S5 and 0.095 when S0, so i think it is stuck in reset. That is why it doesn't post. I measured the resistance to ground of the DRAM_RST line and it is 473.8ohms (not sure if it is a normal value).
The original problem reported by the user is that he was playing and then suddenly the screen turned off. Then the other repair shop reported "a problem with the graphics module". Also, 1.8V_AON which powers up the GPU tries to power up but fails (the enable signal tries to get on but goes off immediately) But I think this goes on after DRAM_RST.
Thank you
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