JetsonTX2 does not turn on

When the power cable is connected, the red LED(CR5) lights up.
I pushed the power button; but, the LED(CR1, CR2 and CR6) does not light up and does not start up.

What is the cause of jetson not starting?

Hi, is this a new devkit without flashing? Did you follow the guide in DLC to do that?

No. My Jetson TX2 needs to have jetpack installed.
Until a few days ago, it was able to start up normally and it has been running.
When I noticed, it was turned off and could not be started.

Please run RMA if this happens after so long times from normally power on.