Just want to update everyone on this forum just in case anyone is looking at this thread.
Previously I thought because I sparked the motherboard with a screwdriver somewhere at the top, touching the heatsink, I suspect a huge current suddenly burst from the battery to the ground, killing one of the fuse. So far, I have only confirmed this fuse to be fauly, and other components nearby are normal (caps, ICs, and so on).
I ended up just replacing the fuse and it works.
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Thanks for the reply.
So the fuses end connected to one with a PCB trace is the output right? I have a hard time understanding the trace as it does not lead anywhere, not even at the back of the board.
The IC on the left as far as I know is MPS MP2940A VRM, and if I'm not mistaken, it is for the CPU. The top fuse seems to trace to the right side, the GPU circuits (judging by the number of VRAM chips around it).
Nonetheless, the top fuse has blown. The big E7 capacitors near are not shorted. Because the PCB trace ends there without any connection to the back...
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Why put two fuses of the same rating in series? Or am I mistaken?
Hello,
This Razer Blade 15 2022 motherboard does not have a schematic. Razer also does not give any schematics or boardviews. Around the GPU VRM circuits I found these two fuses rated for 1.5A (from the letter K).
From the PCB trace I can see that the two are connected. These two are not connected directly to ground. I believe therefore they are placed in series. I wonder why is this? Also judging from the size of the PCB trace, this carries 19V power.
Thank you in advance...1 Photo
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Hi, I am new here
I'm trying to find information to fix my own laptop. I am a software engineer and although I mostly deal with codes, I have learned electronic from my father and at least know some to some little extent about electronic components. I wish to find the information I am looking for here, thank you!
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