Ada

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@Ada

2023-07-10 11:59 Publish comments

To understand the initial problem, it is possible that the repalced chip are not compatible with the original chips. It is important to ensure that the bin numbers are consistent with the original hashboard when replacing with 9K chips. When retrieving chips from scrapped hashboards, make sure to select them accurately.

In the case of the S9K miner, why is there a decrease in computational power for hashboards 41-50 after the 40th hashboard?

@Ada

2023-07-10 11:58 Publish comments

See above picture,there is only one fan. The fans are abnormal,

If the chips are confirmed to be in good condition but there is no computational power, how can we determine if the machine itself is functioning properly?

@Ada

2023-07-10 11:55 Publish comments

The best way is by using the series-parallel 2-part method. If the chips are connected in parallel, it would be difficult to pinpoint the specific faulty chip. In that case, you would need to disconnect and measure each chip individually. However, if the chips are connected in series, you can remove the chip in the middle to determine whether the issue is before or after the removed chip.

How can we accurately identify which chip is faulty when the LDO resistance is abnormal and not functioning properly?

@Ada

2023-07-10 11:47 Publish comments

Check it is the chip's output voltage 0 or the impedance 0. If the chip's output voltage is 0, check wheter there is output in the front domain, or there is coupling capacitor falling. and there will be no CLK in the next domain; If the impedance is 0, the chip's CLK signal is short-circuited, and you need to remove one of the chips in the domain to know which chip is shorted.

If the chip CLK value is zero while other aspects appear to be fine, what could be the issue？

@Ada

2023-07-10 11:44 Publish comments

The temperature on the hashboard is uploaded through the connection between the 62nd chip and the temperature controller. If there is a signal interruption and the temperature is not displayed, you should troubleshoot it as a fault related to the 62nd chip. Treat it as a repair for the 62nd chip or as a repair for a missing chip.

How is the temperature of the hashboard uploaded? When encountering a signal interruption where the temperature is not displayed, how should the issue be investigated and resolved?

@Ada

2023-07-10 11:41 Publish comments

Check the model of the temperature sensors on the boards and make the necessary changes to the configuration to ensure compatibility.

Several boards have been tested, and all of them show a temperature sensor reading of 0. Even after replacing the three temperature sensor files, the issue persists. What could be the problem causing this issue?

@Ada

2023-07-10 11:40 Publish comments

Remove the 3rd hashboard and do single-board test to find out the problem.

The total hashrate is consistently insufficient, and there is no temperature reading. The individual board tests show no issues, but the third board continues to lack computational power.

@Ada

2023-07-10 11:34 Publish comments

Check the kernel logs errors whihc related to the temperature problem. Verify if the temperature sensor model is correct. If the temperature sensor model is incorrect, reconfigure the temperature sensor file to ensure it matches the correct model. If the temperature sensor model is correct,replace the chip to resolve the issue.

The total hashrate is consistently insufficient, and there is no temperature reading. The individual board tests show no issues, but the third board continues to lack computational power.

@Ada

2023-07-10 11:32 Publish comments

If it passes the single-board test, update the firmware. And then check if the 3 hashboards temp sensor model are consistent. If single-board test fail, there is a temp sensor issue. prioritize replacing the chip on the 62nd board.

If the temperature reading of the 8th board on the backend interface is incorrect, how should it be repaired?

@Ada

2023-07-10 11:25 Publish comments

First, do not plug in the faulty board with the data cable. Test only the good boards individually to see if they function properly. Tighten the screws and secure the clasps with pliers for a firmer connection. Update the firmware and tighten the screws. Use the voltage adjustment line to supply power, monitor the chip status with the control board, and then adjust the power supply.

S17 hashboard voltage abnormal

@Ada

2023-07-10 11:19 Publish comments

Do single board test to see the issue. If report 0,check the RI signal from the last chip. If report x asic, check the domain voltage where the chip located.

The last five voltage domains have voltage, while the other domains do not. The 8.5V is present, but the LDOs have no voltage. What could be the problem causing this issue?

@Ada

2023-07-10 11:16 Publish comments

Test the IO port 3.3V.

What could be the issue if the hashboard does not have an 8.5V voltage supply?

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