For the Switching power, kindly hel

For the Switching power, kindly help us fix it as the warranty, because we don’t know its warranty time, and it just defective only within 3months. Pls help us this case.

ผลลัพธ์ (อังกฤษ) 2:

For the Switching power, kindly help us fix it as the warranty, because we do not know its warranty time, and it just defective only within 3months. Pls help us this case.