Question SMPS out of order one by one

[lokbiradarischool]

Our computer lab has 40 computers. Since last couple of months, SMPS is going out one by one. Our electrician checked power supply and it looks ok. Also, the lab runs on heavy duty batteries which are charged by solar power.

What can be the possible reason?

Thanks,
Sandeep

 

[jonnyguru]

What are the power supplies?