Acidmods
Console Modding------ ( Here you can talk about your favorite Consoles ) => Xbox One => Topic started by: MadMaxGR on July 22, 2020, 01:23:20 AM
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Hi everyone, new case today. An XBOX One S brought by customer. The console fell from 1 meter height and I had a broken power supply for starters (the console was not showing any sign of power at all) , which I have replaced.
Now it does power on, but immediately goes off. Usually this means grounded 12V rail, but checked out the connector on the board and there is no short of 12V rail. That means it is not the 3 mosfets that are usually the fault.
I checked the board further and comparing to another one, I found all the capacitors next to the RAM chips, shorted. First time I encounter such. What could be the issue? The gate?
See the attached photos with the marked capacitors that short out on the board.
(https://i.postimg.cc/vc9MYFvX/IMG-20200722-104823.jpg) (https://postimg.cc/vc9MYFvX)
(https://i.postimg.cc/hhNcRPVf/IMG-20200722-104912.jpg) (https://postimg.cc/hhNcRPVf)
(https://i.postimg.cc/dhjYC2py/IMG-20200722-105146.jpg) (https://postimg.cc/dhjYC2py)
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@RDC do you have any idea?
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Haven't really touched any of those boards, but it's highly doubtful all of those Caps are each actually shorted. They are all most likely on the same rail in there, so all are in parallel, and only 1 of them, or anything else that is also on that same rail, has the actual short.
See what the voltage on that rails is supposed to be, then inject that voltage and find the component(s) that is heating up first.
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The customer decided to not wait for repair, I returned it back and he bought new... The mystery will remain unsolved...