My Bitmaintech s-7 underpreforms at freq 600 + freq 550 , not freq 500 (Fixed!)

[bradli]

][URL=http://radikal.ru/fp/6b46641481a74ed687d0b3be8a136871][/url]

[1715069819]

1715069819

[1715069819]

1715069819

[bradli]

First board



Second



Third



and Hash Rate one by one

http://imgur.com/a/5kvlf

[RichBC]

Is that measurement of 12.08V made with the S7 Hashing, and what about the other 2 Hash Boards, they do not seem to be powered?

Rich

[bradli]

Is that measurement of 12.08V made with the S7 Hashing, and what about the other 2 Hash Boards, they do not seem to be powered?

Rich

Yes. Without hashing its show 12.26 V

2 of boards with Hasrate

http://imgur.com/a/ekRYm

I think that last board has some problem

[bradli]

All of 3
Drop the V



Drop Hashreta

[bradli]

[RichBC]

Question bradli?

When the miner is fully plugged up what is your PSU configuration? Is it a single PSU or multiple? If multiple what are you driving with each supply?

Definitely you have a low reading on one board, was that measured when powered from the same PSU wiring as the other measurements? Tha is to say is it a PSU / wiring problem or is that board taking more current?

As well as individually powering boards & making measurements it would be good to fully power up the miner, set it hashing and then make 3 measurements directly into the board sockets as you have shown?

Rich

[bradli]

Question bradli?

When the miner is fully plugged up what is your PSU configuration? Is it a single PSU or multiple? If multiple what are you driving with each supply?

Definitely you have a low reading on one board, was that measured when powered from the same PSU wiring as the other measurements? Tha is to say is it a PSU / wiring problem or is that board taking more current?

As well as individually powering boards & making measurements it would be good to fully power up the miner, set it hashing and then make 3 measurements directly into the board sockets as you have shown?

Rich

Singel Psu. I think it s board.

[RichBC]

OK well that simplifies things.    So the board with the < 12V was that measured using the same connector cables as the other measurements? if so then that board must be taking quite a bit more current than the others? Is the temperature higher on that board?

I think still worth fully powering the miner and then measuring voltages on  the 3 board connectors.

Rich

[bradli]

I ve manage my psu server 2000w to do 12.5-.6 V.
In power hashing - 12.25-.30 V.
600- 4.7-4.75 TH
Its better from before.