It will depend on what is causing the fault. If for example a component is failing due to heat, it will warm up, fail, that causes a condition to be removed, resulting in te component cooling and the failure disappearing ...
You need to start with a known working phone, plug that in and nothing else, leave it alone for a whole and see what happens. Then plug in te hub, wait and see the results ... and so on until you find the device or combination that is causing the problem.
M H C
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