Quote from: NotATether on Today at 06:49:40 PM

Quote from: jzk120 on May 05, 2021, 05:04:26 PM

The control board and the hash board require separate voltages. In my opinion the best bet would be to spend the $300 to get an actual PSU thats meant to work with the miner. This then means that the only component thats not factory is the hash boards (and the fans). The hash boards simply have some SMD diodes for reverse current protection and some capacitors along with the BM1398BB chips.

I'm pretty sure the hash board will draw a lot more current than the control board, right?

Somehow it's hard to find digital PSUs on Amazon that can output 150A and not some low amount like 5A or 10A, which makes me wonder whether high-power drawing PSUs are are only readily available from generic sellers on Alibaba (considering most of the PSUs end up in China anyway)?

Quote from: jzk120 on May 05, 2021, 05:04:26 PM

Alibaba does have services where you can send in a pcb and they'll clone it for you for cheap (again, pcb = just the board no components on it). But i sadly dont have a board i can sacrifice, hell there isnt even a proper image of the board on google yet -_-

But then how are you going to mount all the components onto the cloned PCB when you don't have duplicates of them? That's assuming you can somehow find out the model numbers of them all.

The PSU can supply a max of 12-15V 233A to the hash board while it only supplies 12.3V 15A to the control board as seen from the datasheet of the PSU on bitmain's website linked below :
https://shop.bitmain.com/product/detail?pid=00020210302152412332Xrq3G3E60644

As for the mounting of all the components, they are cheap and available to buy from any component website or even alibaba including the main hashing chips and all other ICs as i stated before.
For someone with a tiny bit of experience with BGA and SMD components, getting a hash board ready would take no longer than an hour.

This, however does come with a caveat. The boards do have a microcontroller on them if i remember correctly to communicate with the control board. (i'll update with the exact controller model once i get the chance). But the data pins on the controller are freely accessible on the board itself. Copying over the code from the controller to another should not be a hard task at all.