Re: T17/S17 malfunction: cases, solutions, remedies, RMA history
My friend mikeywith, I really appreciate your good words, thanks. About your question of keep it stock or overclocking, I rather underclocking them cut the blue wire from the fans and place the miner in a horizontal position instead of vertical so the chips on the boards also stay in horizontal position and that might help to keep them from falling easily. Also I observed that the base plate where the fans are attached are not completely open to the airflow as those in the S9. Those plates have metal fins forming squares in front of the fans and let me tell you those fins cause a disruption and some blockage of the airflow into de miner. In the past I did some experiment placing a simple air filter in front of the intake fans on S9, after few minutes of operation the miner's temperature raised exponentially in relation with a no air filter condition.
Based on that, I suspect that any obstruction of the air flow, no matter how small is can cause the temperature on the miner to raise abnormally high and relatively quick. The solution to this is to cut those stupid square fins that are in the fan base plate and leave them as those that come with the S9. Just keep the outer frame of the plate which is in reality where the plate and fans attach to the aluminum body of the miner.
About your question of which soldering paste to use, the BEST choice all over the board hands down is Kester TSF-6522. it can be bought on electronic specialty stores such as Digikey. This compound is specially good since is a tacky and NO CLEAN class which is very important. Due to the limited space between the hashing chips is absolutely necessary to leave no trace of soldering material around and within the chip that is about to be soldered.
Here is the link: https://www.digikey.com/products/en/soldering-desoldering-rework-products/flux-flux-remover/266
I hope this have helped many people around to understand what is really going on with this miners and to suggest to those that are willing to fix by themselves their miners to do it. Instead to spend the money by sending your machine, as Bitmain expects to do it, to Hong Kong, I rather buy the chips, the hot air soldering machine and soldering compound and do it myself. Yet, if you feel you are not able to do such a job find an electronic technician that have hot air soldering skills and ask to do the job, you can supply the hashing chips and the soldering paste.
To all good friends in this community I tell you guys WE ALL are on our own on this and if I were a lawyer I will be filling for a class action lawsuit against Bitmain. By the time and in the best of our interests let's find out how to solve our miners problems by ourselves so we can be back in business in a safe and low cost manner.
Best regards.
Friend Favebook, I already did and I'm really sick of "copy and paste" answers by someone called Jessica L. who is in charge of technical department.
Based on that, I suspect that any obstruction of the air flow, no matter how small is can cause the temperature on the miner to raise abnormally high and relatively quick. The solution to this is to cut those stupid square fins that are in the fan base plate and leave them as those that come with the S9. Just keep the outer frame of the plate which is in reality where the plate and fans attach to the aluminum body of the miner.
About your question of which soldering paste to use, the BEST choice all over the board hands down is Kester TSF-6522. it can be bought on electronic specialty stores such as Digikey. This compound is specially good since is a tacky and NO CLEAN class which is very important. Due to the limited space between the hashing chips is absolutely necessary to leave no trace of soldering material around and within the chip that is about to be soldered.
Here is the link: https://www.digikey.com/products/en/soldering-desoldering-rework-products/flux-flux-remover/266
I hope this have helped many people around to understand what is really going on with this miners and to suggest to those that are willing to fix by themselves their miners to do it. Instead to spend the money by sending your machine, as Bitmain expects to do it, to Hong Kong, I rather buy the chips, the hot air soldering machine and soldering compound and do it myself. Yet, if you feel you are not able to do such a job find an electronic technician that have hot air soldering skills and ask to do the job, you can supply the hashing chips and the soldering paste.
To all good friends in this community I tell you guys WE ALL are on our own on this and if I were a lawyer I will be filling for a class action lawsuit against Bitmain. By the time and in the best of our interests let's find out how to solve our miners problems by ourselves so we can be back in business in a safe and low cost manner.
Best regards.
... Would you mind setting up a ticket and telling them all of this? You might get a refund or some coupon or even a job offer there 
Friend Favebook, I already did and I'm really sick of "copy and paste" answers by someone called Jessica L. who is in charge of technical department.