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December 7th, 2020 10:00
E7470 camera not working
My camera is not detected and the right usb port is dead too. I got a prompting message that usb has overcurrent. I tried all suggestions found online, but I can't make it work.
I moved the display assembly to another laptop and camera works. It is not faulty.
I think there's some transistor causing overcurrent which makes system to shutdown usb port and camera.
I made some inspection usb looks physically fine.
Any suggestions are appreciated.
Regradrs
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Henngel
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December 27th, 2020 21:00
I think there is a detection switch that shuts down the USB port? I need to identify it/
Henngel
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8 Posts
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January 19th, 2021 05:00
I found that UI3 chip (Usb Detection controller switch)
gets too hot immediately after powering the motherboard.
I don't know if it is faulty or something else cause it to be hot.
Henngel
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January 24th, 2021 06:00
Now I removed a shorted capacitor. The chip doesn't get hot and I get 5 v from usb port.
I haven't found a replacement yet. I am not sure if this would cause any damage.