No display No Fan On No LED On

I have purchased this recently but unable to Turn it on.
Power supply is 100% ok and operating system is correctly burnt in sd card but I have not found any display on output.
It does not do anything by power it up. No fan turn on, no indication, nothing heat up .
Please recommend Debugging process.

Debug process: Dump the boot up log. If it hang in somewhere, flash your board with sdkmanager.

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