Problem with A9 Zmaster not working? NEED HELP PLEASE!

[jadrew1020]

Hi,

I have purchased 9 A9 Zmaster and one of them has to stopped working.

When I plug in the miner everything boots up but after 20 sec the three green lights on the hashboards turnoff and they stayed turned off. I tryed changing the PSU to see if it wasnt the power supply that wasnt working but it still happens to do the same thing. I thing it might be something to do with the main controller board.

Here are some pictures of what my miner looks like when its been on for 5 minutes.  https://ibb.co/pv98M2d https://ibb.co/VgnQ3FB https://ibb.co/VgnQ3FB
https://ibb.co/KNxG9Nd

Please help!

thanks,

Jamie