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Title: r4 antminer 7.5Th hardware fails issues Post by: Karateminer on February 18, 2017, 01:16:10 AM Hello there miners, my first impressions about the antminer r4 7.5TH are not all positive, although the machine is silent, I think it has a design flaw in its hardware, a lot of 14 machines 4 of them have thrown flaws in the processing cards. These errors occur with just a reboot of the system, or a change in the Miner configuration (eg change from antpool to slushpool)even in a simple on and off. I suspect that Bitmain must have received many reports associated with this failure. In summary the machine is unstable, In my case 4 machines have turned off several processors in both boards, And in one of the 4, it only recognizes one board. I tried with a soft reset, then hard reset, firmware upgrade and in all cases I did not have good results. If anyone has had this experience I appreciate your comments. In advance I have no other option than sending the parts to validate the warranty.
Title: Re: r4 antminer hardware fails issues Post by: HagssFIN on February 18, 2017, 01:18:34 AM Yeah, warranty service it is with the faulty boards. :-\
I would like if Bitmain would be little more open on the repairs they do for the miners, if it is something that advanced users could with right tools do themselves. Title: Re: r4 antminer 7.5Th hardware fails issues Post by: Karateminer on February 18, 2017, 01:43:10 AM Thanks for your comment, there is actually no other option than the change of boards which translates into loss of time and money. In my case I see that the percentage of machines that failed is very high 4 out of 14. And the cause must be because the machine is not robust, it probably has not been tested enough before its release Title: Re: r4 antminer 7.5Th hardware fails issues Post by: jamesb777 on February 18, 2017, 04:34:52 AM 50% fail rate here from 4 of the 7.5th machines.. 3 previous batch machines still running without issue.
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