Hashing rate problem in an antminer s9

[ampereman]

My miner is with Frequency at default  of 600

This photo  is  taken after 10 days and more from the startup....

https://postimg.org/image/ze1huqhsn/

Basically a blade is often suffering of the problem in the picture.  If I reboot it works well for a while and after a period the problem appears again.

This is after few hours from the startup


https://postimg.org/image/c66lxcbtl/

How is possibile that i have a lot of xxxxxx xxx but the hashing rate is still right?


Can you guys help me on this?

[ampereman]

I tryed to reduce the frequency at 350 but the problem still persist.  Any idea?!

[unholycactus]

From what I understand your hash rate is still fine?
There shouldn't be any problems or anything or you to fix if the hash rate your pool sees is high enough,

[ampereman]

The miner shows higher hashrate then the pool. The blade with xxx is not working infact evenif the miner shows 12.93 the pool sai 8.5 TH