Title: My dead avalon 741 story starting 9/21/2017 Post by: philipma1957 on September 21, 2017, 05:36:25 PM Okay 1 avalon 741 from my July 21st order Shipped July 27 delivered August 3?
died today after mining for 48 days. I sent a support ticket to canaan.io today This thread will track how long a repair takes. Any and all insulting anti Chinese posts will be deleted. So lets start out with my troubleshooting. I had a rasp pi with a chain of 3x 721's I had a rasp pi with 1x 741 first trick was switching the controller connecting each one . If the problem follows the controller it means the controller or a wire is bad. the good chain of 3 works with both controllers. the bad 741 does not work with either controller then put in a known good psu the bad 741 does not work. so all cables good controller good psu good. next step try one board from the dead gear does not work next step try the other board from the dead gear does not work. so both boards may be dead or more likely the internal daughter board died. At this point I can not do more testing as all my 741's are under warranty. If I could test I would use the hash boards on the good unit with the internal daughter board from the dead unit. I think it would not work as I suspect the daughter board died. I want to do a daily chronology of this and show how good canaan.io is with dead gear under warranty. Sent this pm to steve of canaan.io Hi Steve, I filed a ticket at canaan.io for my order ##6.... July 21, 2017 Completed Most likely it is a dead interface board or daughter board in side the miner. maybe two dead hashboards more likely the daughter board. And not to complain but my order on august 6th was supposed to be free shipping and I was charged 51 usd to have it shipped. I know you are understaffed and over worked but I have to ask for service on my miner as it is under warranty. as for the over charge on the shipping if you can refund fine if not let me know. the ticket number is 98872: ID_______Status____Date_______________________Product___________ Department____Order #9.... New......... September 21, 2017 10:54 pm.....AvalonMiner 741........Support.............#64035 philipma1957 4 hours ago The miner from my july 21st order # 6.... no longer mines. I think the daughter board has failed. I will follow up once a day Title: Re: My dead avalon 741 story starting 9/21/2017 Post by: fanatic26 on September 21, 2017, 06:56:46 PM Have you tried doing an MM update on the bad unit? Maybe there was corruption on the controller board. I havent had to deal with that on the A7 but on the A6 I was able to revive unresponsive units pretty regularly with an MM flash. Even if the controller doesnt 'see' the unit, the mm upgrade process would complete on the A6.
Title: Re: My dead avalon 741 story starting 9/21/2017 Post by: NotFuzzyWarm on September 21, 2017, 06:56:49 PM Is the AUC dongle and miner at least seen in CGMiner Status?
Think what is reported under "Avalon Devices" is the AUC dongle itself and right under that is "Avalon Devices Status" reporting each miner. Title: Re: My dead avalon 741 story starting 9/21/2017 Post by: philipma1957 on September 21, 2017, 07:05:39 PM understand I have 3 setups.
Rasp pi 3 with a 3 chain 721 Rasp pi 3 with a 1 chain good 741 Rasp pi 3 with a 1 chain dead 741 so I take dead 741 and move it to the good 741 rasp pi 3 using all the cables from the good 741 the dead one stays dead. at the same time I move good 741 to the dead 741 rasp pi cables and the good 741 works. that test show the problem is in the avalon 741 not the gear it attaches to. I do same test with the 3 chain rasp pi 3 and the dead unit stay dead. so the dead unit does not work on 3 independent setups. most likely the unit has the problem not the setups. I do have a fourth rasp pi I will try that one. I also have another avalon 741 coming on tues I could try that dongle. but I have had a lot of experience testing gear like this. I am 95% sure the internal daughter board is dead. Title: Re: My dead avalon 741 story starting 9/21/2017 Post by: fanatic26 on September 21, 2017, 07:24:56 PM I understand you have 3 setups, I understand that you think the problem is the daughter board.
My suggestion was a possible fix for a problematic daughter board. The MM firmware is the firmware that runs the daughter board. It can get corrupt without killing the entire board which is where my suggestion comes into play. None of the steps you have mentioned attempted to fix the daughter board after you decided that it was the problem. If you dont want to try it thats fine, I was just offering my experience as I have managed over 8000 Avalon devices in the past 3 years. Title: Re: My dead avalon 741 story starting 9/21/2017 Post by: philipma1957 on September 21, 2017, 07:29:10 PM I understand you have 3 setups, I understand that you think the problem is the daughter board. My suggestion was a possible fix for a problematic daughter board. The MM firmware is the firmware that runs the daughter board. It can get corrupt without killing the entire board which is where my suggestion comes into play. None of the steps you have mentioned attempted to fix the daughter board after you decided that it was the problem. If you dont want to try it thats fine, I was just offering my experience as I have managed over 8000 Avalon devices in the past 3 years. my bad I misread your fix.. so when I click on mmupgrade it wants a mcs file is the link on canaan.io MM741.mcs I now have mm upgrading I now have mm upgrade finish I show this firmware 7411706-3162860 and the website reads that version 7411706-3162860 is newest. still dead. neither board fires up https://i.imgur.com/TWC7Sgo.png (https://i.imgur.com/TWC7Sgo.png) Title: Re: My dead avalon 741 story starting 9/21/2017 Post by: fanatic26 on September 21, 2017, 08:26:52 PM Interesting. It looks like the daughter board is working. The DNA is the serial number off of that little board so the controller is talking to the unit itself. It is seeing at least some information from the hashing boards as it is reporting temperature and fan speed. Whats strange is there are no real error codes that would clue you into what is going on with the boards as you would expect with a hardware failure.
Title: Re: My dead avalon 741 story starting 9/21/2017 Post by: philipma1957 on September 21, 2017, 08:56:51 PM Interesting. It looks like the daughter board is working. The DNA is the serial number off of that little board so the controller is talking to the unit itself. It is seeing at least some information from the hashing boards as it is reporting temperature and fan speed. Whats strange is there are no real error codes that would clue you into what is going on with the boards as you would expect with a hardware failure. yeah it is weird . now I could chain it to the working unit fans will fire it will turn the led blue then the led goes to white fans slow. it will come and go on the interface. when fan fires and the led goes blue it is on the interface then it turns down. this was something the spondoolies would do we used to need to point a blow dryer at them for a few minutes to get them to start. I got a reply from steve of canaan I am hoping for a part or something to fix it. https://i.imgur.com/J1755qJ.png (https://i.imgur.com/J1755qJ.png) Title: Re: My dead avalon 741 story starting 9/21/2017 Post by: NotFuzzyWarm on September 21, 2017, 10:47:18 PM Interesting. It looks like the daughter board is working. The DNA is the serial number off of that little board so the controller is talking to the unit itself. It is seeing at least some information from the hashing boards as it is reporting temperature and fan speed. Whats strange is there are no real error codes that would clue you into what is going on with the boards as you would expect with a hardware failure. That ^^ is why I asked what CGMiner Status was showing: Was the AUC seen (yes) and more to the point was the miners control board talking at all (again yes).Anything different in the Kernel Log reported by a good vs dead miner? Title: Re: My dead avalon 741 story starting 9/21/2017 Post by: philipma1957 on September 21, 2017, 11:09:25 PM That ^^ is why I asked what CGMiner Status was showing: Was the AUC seen (yes) and more to the point was the miners control board talking at all (again yes). Anything different in the Kernel Log reported by a good vs dead miner? they look pretty much the same. I will screen shot later. One time the board actually hashed about 130gh and submitted a share.. Years ago this happened with both the s-5 and the sp20 on occasion. I got an email from support and from steve of canaan.io maybe it could be fixed quickly. Title: Re: My dead avalon 741 story starting 9/21/2017 Post by: TheYankeesWin! on September 22, 2017, 02:37:27 PM Any updates phil?
Title: Re: My dead avalon 741 story starting 9/21/2017 Post by: philipma1957 on September 22, 2017, 02:38:37 PM They said they will send a replacement unit.
I have a dhl number from them. I will post when it arrives. Title: Re: My dead avalon 741 story starting 9/21/2017 Post by: philipma1957 on September 22, 2017, 04:28:36 PM only 48 days :o, maybe it's not a good products. Hard to tell. I have 3 x avalon 721's mining since December zero issues. I have had 100 avalon's I killed 1 due to using a high voltage power of 12.8 volts. I think it was an avalon six around March of 2016. My second 741 has been running well. So I need to figure what died on the dead one. So 2 dead units across 4 styles and 100 units is very good , but I am a bit nervous that the 741's have an issue. To soon to tell. By next week I will be up to 3x 741's and hopefully it was an outlier not a sign of things to come. Title: Re: My dead avalon 741 story starting 9/21/2017 Post by: fanatic26 on September 25, 2017, 10:02:33 PM I have managed a fair number of A741s and the overall failure rate after 60 days including DOA is under 2%. This is far and away the best I have seen from an asic hardware company.
Title: Re: My dead avalon 741 story starting 9/21/2017 Post by: philipma1957 on September 26, 2017, 11:53:47 PM I have managed a fair number of A741s and the overall failure rate after 60 days including DOA is under 2%. This is far and away the best I have seen from an asic hardware company. I have good success with avalon better the my s-9's for sure . the replacement came it works and a third unit came it works. x I have 3x 721's and 3x 741's at this time. Title: Re: My dead avalon 741 story starting 9/21/2017 Post by: Steamtyme on December 14, 2017, 04:20:33 PM Hey I saw your post in the Dragonmint thread. Did you have a 2nd 741 fail? Or was that before you started this thread?
What went wrong? If you know Title: Re: My dead avalon 741 story starting 9/21/2017 Post by: cromsps on October 30, 2018, 11:37:31 PM I'm sorry to re-open this topic, but I saw that you have, or at least had :-) , some of 741
I bought 2, downloaded the img for nicehash, put in a PI 2 B, configure the Lan and the nicehash pools, and everything is working. But every time the machine "solves" on share, it restarts CGminerStatus... its all working correctly, but on CGminerStatus I can only see Accepted = 1, after finishing this, it starts from zero again... Do you have any issue like this ? for example, Starting this quote, Code: -> 5m 36s - 6775.91 - 1 - 0 - 12 - 1,755,789 Ending this quote, Code: -> 3m 48s - 6649.32 - 0 - 0 - 1 174,731 Title: Re: My dead avalon 741 story starting 9/21/2017 Post by: Steamtyme on October 31, 2018, 01:34:44 AM Hey there,
You are best to ask this here in the Troubleshooting and repair guide for AvalonMiner models 721, 741, 761, 821 & 841 (https://bitcointalk.org/index.php?topic=3224256.0) , Which it looks like you were the last person to post in regarding a different issue. In an attempt to assist, I don't use Nicehash so I was unaware there was a specific firmware needed. Are you sure you used the version for PI 2 b, and not one of the other 2 options, Also double check it's the 741 version? When you do post could you try and add links to images for the miner status page and post the Api log using the code feature like you did in this post. The more information the better. Also did you try letting them run normally at first pointed elsewhere? This would help in figuring out if it is a firmware issue or maybe an issue with the controller/controller power supply. Edit: This is also the 7 series (https://bitcointalk.org/index.php?topic=1673843.2140) hardware thread you might be able to find some info there, as it was active during the time that firmware was released, definitely worth a serch. Title: Re: My dead avalon 741 story starting 9/21/2017 Post by: cromsps on October 31, 2018, 04:01:35 PM |