Dear Kimura san,
After checked with PC, I think the problem cause from power bottom not revert (ไม่คืนตัว) when push on switch.
I’m getting information from the other source, our PC faced the same problem but.
They tried to adjust power bottom which the result after adjusted quite good, power bottom can use normally.
However, I recommended our PC please push power bottom 2-3 times to make a switch has movement.
For the defective sets, we are waiting for the products come back at TTC to checking before report to SKW.
.