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Hey. I have no power on laptop. Green light works. only no power at all. no fan spin. checked voltages its seems ok but only one chip is bugging and getting heated while mag-safe is connected. chip called u7201. Any ideas why this chip could be foulty ? if i would change it does the problem should be gone or not ? Sorry for my bad english, hope you understand me. cheers
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Here’s the chips specs TI TPS51125
If it’s damaged it will need to be replaced. This is not an easy chip to install, I would strongly recommend you find someone with SMT soldering skills and the proper tool’s to do it.
这个答案有帮助吗？
I do have a friend that have all tools that need. But just wondering if its not time waste if ill order this chip online change it and nothing is going to change. just wondering if it should really work after replacing it
Without doing more work diagnosing the board its not really possible to tell you that. Replacing a damaged chip is one of the first things I would do as well as check the lines gong to it for other damage.
This series had a few different issues so it could be a bit a cost to get it back running.
Could you give me more steps what could i check. i mean which voltages should i check. cheers
Here's a better source if you really want to get deep Louis Rossmann A1286 vids
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