Turn on the MSI laptop [GP62 6QF]. It shows no power indicator.
Turn on the MSI laptop [GP62 6QF]. It shows no power indicator.
Problem: Laptop fails to start and no power indicator appears, even with the cord connected. Description: CPU fan began vibrating because of worn bearings. I removed the back panel, cleaned dust from cooling fins and fan housing using a needle. Despite cleaning, vibration persisted, so I applied lubricant to the bearing until a new fan arrives (expected in about 4 days). Then I unscrewed the heatsink screws, the fan screw, and gently pulled the fan out by bending the aluminum housing slightly and lifting the cooling pipes. The lift reached up to 6mm at the edge of the cooling cover, which was sufficient to free the fan. My intuition told me this approach would work. Next, I disassembled the fan, lightly lubricated the shaft until it stopped vibrating, and reassembled everything. Connected the wires, reinstalled the cover, and tried to power it on—still no response. "Oh, the power cord" came to mind... I connected the cord again and still got nothing. The power light remains off. What I attempted: - Removing the entire battery, held power button for 60 seconds. - Using a different outlet. - Verifying all connections, including wires I had disconnected during this ordeal: Bluetooth adapter antennas, fan power cable, some flat ribbon cables with pin connectors. [Uncertain about their purpose.] Edit: The flat ribbon cable I took out appears to be a video cable plugged directly into the display. Edited May 23, 2022 by Wieszako Additional info
If it doesn't seem to react at all when pressing the power button, verify whether the button isn't making proper contact. It might be frustrating, but disassembling it could reveal the MB or PCB where the button should connect. Check if you can activate the button through another method. If that fails, the power supply unit (PSU) may be faulty—this often points to an aging laptop with worn bearings. For better advice in the future, include specs or the model number.
It’s going to be a tough situation, but I’ll give it a shot. It’s odd that the PSU failed right when I was fixing the fan—could just be luck or maybe a sign of things to come. P.S.: The specs are listed in the title. There’s no difference between various GP62 6QF models except for RAM size, which has already been updated.
I used the multimeter and everything from the outlet to the power circuit was fine. Something stood out. A capacitor had a thin oily film around it. It’s a PC79 - C0.1u50X. I checked the MB schematics and saw it’s part of the GPU power section. I’ve attached the schematic for reference. I’m not sure if I’m in the right place. Interpreting the diagram has been tough; I spent about two hours trying to understand its purpose. I also verified that all grounding screws are secure. That still didn’t help. I heard the PSU stopped buzzing after plugging in the power cord, so it’s definitely discharging. Pressing the power button now produces a high-pitched buzzing that shifts to even higher tones, but nothing else occurs. MS-16J51_0A MS-1795 (1).pdf