Dear Punnipa and Mr Sumrit,
I can’t understand you, when you make a warranty , you can’t say it is cheap or expensive. The important that your products sell for us get problem now and it still in the warranty time. Last time of fixing the power supply, we have to pay many fee also your fixing fee, transport fee. For this main board still in the warranty time, kindly be informed that we need your replacement to could make the after service for the customer.
Anny