I’m frustrated!

What are the reason to cause "Bad NVOL CSun"?

My customer report 4 different 2704 show "Bad NVOL CSun" within about 2 month. And all these 2704 can be reset. This is unusual for us. if it happen in single one 2704 will be no issue. But this case happen in 4 different 2704 and also in short period. I need your support for further detail information about the root cause of "Bad NVOL CSun". For example; What can be the reason to trigger this fail? high voltage peaks?(how high?)
1 person has
this problem