MSP-GANG: Cannot programmed

Programmer model: MSP-GANG

The using process is as follows:

1.Copy the program into the programmer, everything is normal

2.The normal situation when the programmer burns program to the PCB board:

3. The programmer is normal when it is used at the beginning, but after a period of time, the programming ports appear abnormal one by one and cannot be programmed normally. Abnormal situation when the programmer burns to the circuit board as below:
4. The program copying method and the burning method is the same, but suddenly it cannot be burned normally when used, and the same situation occurs in several devices currently purchased.

Customer wants to return and exchanges