s5 board detected oooooooo oooooooo oooooooo oooooo no speed

[SunnyIgor]

 
one of my boards has this behavior when it is alone connected to the controller.
when 2 other boards and this one are connected, it is xxxxxx xxxxxx xxxxxxx xxxxxxx
anybody know what  to do?

[VirosaGITS]

one of my boards has this behavior when it is alone connected to the controller.
when 2 other boards and this one are connected, it is xxxxxx xxxxxx xxxxxxx xxxxxxx
anybody know what  to do?

Sound like typical dead boards, all my dead boards do the same thing. You can check core voltages to see if the voltage to the chip is good, can try a reflow soldering. To be honest trying to fix a board is kind of a pain, takes time and expertise.

Assuming the PSU and the controller is good, after assessing that, the only thing you can try without expertise is a reflow soldering and then if that does not work, you're better off selling the deadboard and enjoying your 1/2 miner.

[SunnyIgor]

one of my boards has this behavior when it is alone connected to the controller.
when 2 other boards and this one are connected, it is xxxxxx xxxxxx xxxxxxx xxxxxxx
anybody know what  to do?

Sound like typical dead boards, all my dead boards do the same thing. You can check core voltages to see if the voltage to the chip is good, can try a reflow soldering. To be honest trying to fix a board is kind of a pain, takes time and expertise.

Assuming the PSU and the controller is good, after assessing that, the only thing you can try without expertise is a reflow soldering and then if that does not work, you're better off selling the deadboard and enjoying your 1/2 miner.

oke thanks for the advise
people buy dead boards?

[VirosaGITS]

one of my boards has this behavior when it is alone connected to the controller.
when 2 other boards and this one are connected, it is xxxxxx xxxxxx xxxxxxx xxxxxxx
anybody know what  to do?

Sound like typical dead boards, all my dead boards do the same thing. You can check core voltages to see if the voltage to the chip is good, can try a reflow soldering. To be honest trying to fix a board is kind of a pain, takes time and expertise.

Assuming the PSU and the controller is good, after assessing that, the only thing you can try without expertise is a reflow soldering and then if that does not work, you're better off selling the deadboard and enjoying your 1/2 miner.

oke thanks for the advise
people buy dead boards?

Yes, people buy dead boards for parts. Unless the board is really damaged, the chips cracked, etc, the board can be salvaged for its components and even chips. Depending on where you are, if in north america or can ship there for cheap, even i would be interested in a cheap one. If elsewhere in the world, some others pick up dead S5 boards as well.

[SunnyIgor]

I am in EU

and have 2 dead ones now

[notabeliever]

Hold the phone..........
My S5 and S1 sometimes display one board with xxx's and hashes from only the good board. If it wiggles then it is a loose connector so this might solve your problem.

To fix this I unplugged all the both 6pin power supply cables to the board and plugged them back in.  Note if you know which board  is which then just unplug from that board.