After assembly, miner not recognized on PC

[OctaMiner]

Hello everyone, yesterday I soldered a BitAxe myself for the first time. The board was already partially populated. And it is the model 201. Now I have populated all the parts and connected the miner via USB, then the PC told me that there was too much voltage on the USB connection and switched it off. Then I desoldered the ASIC chip and re-soldered it. Now the error no longer occurs and the fan on the board is turning and the ASIC is getting warm. But the board is not recognized when plugged into the PC. What could be the error here?

[skot]

Try removing D1 (it's not needed). If the ESP32 still doesn't show up on USB check the soldering of the ESP32, USB connector and U11

[OctaMiner]

Thank you very much, now I was able to flash it. I used the web flasher for this. But my board has version number 201 and not 204. Does it still work? I can now access the AxeOS web interface and have set everything up and updated. D1 SMD is no longer installed on the board. But it doesn't show me any hashrate? What could be the reason for this? ^^

[OctaMiner]

I have now managed to downgrade the board version to 201. Unfortunately the problem still persists. The pool settings are correct, I've also tried it in other pools.

I'll unsolder the chip again tomorrow and put it back in the hope that it will work.

Could it be that the chip is simply broken? So I think it is displayed correctly and the temperature and power consumption are also correct.

I had the problem with my other BitAxe Ultrs 201 when I switched from version 2.1.7 to 2.1.8 that it no longer wanted to mine either.

The thing is, I've played various software versions over and over on the BitAxe over the last few hours.

In any case, thank you very much for the help! :)

[skot]

Can you post the log from when it's showing zero hashrate?

[OctaMiner]

Hello, unfortunately I haven't had a chance to desolder the ASIC yet. But here are the logs of the current status.

[skot]

I dont see any response from the ASIC in this log snippet. If you want to get a more detailed log, you can connect to the serial port at 115200 baud over usbserial.

[OctaMiner]

Close
I tried soldering the ASIC again this evening. It was recognized, but not all of the poles were correctly connected when soldering. Anyway, it works now, let's see what the long-term test shows. :) Thank you again for your support

[OctaMiner]

@skot

Now I have a new problem with another freshly soldered BitAxe. I learned a lot from the other one. But I don't have an answer to this one. The software has now been installed, just like on the other 201, and it's set up. Now it's not hashing again and the wattage jumps from 2 watts to 7-8 watts every few seconds and then drops back to 2 watts. I've already re-soldered the ASIC chip several times, with no improvement. Does anyone have any idea what the problem could be? Or is a component damaged?

[skot]

It seems like a power problem; could be the voltage regulator, or the ASIC soldering.

Are you using the barrel connector for power? What's your setup?

[OctaMiner]

Is the voltage regulator positioned correctly on U5 or U6? I'll check the components tomorrow and replace them if necessary. Thanks for the fast respond! :)

[skot]

I was referring to U9.. it's a lot more complicated than U5, U6 or U11