This situation is generally brought on by irregular sequence resistance welding of CLK, CI, and BO around the entrance and rear of the X chip, so just deal with checking these six resistors. There's a smaller likelihood that it's caused by abnormal welding of the subsequent pins on the 3 chips X-one, X, and X+one:
To test repairing and replacing the chip, check the chip 1st after which you can do the practical take a look at after it passes. The functional test will have to make sure the smaller heatsink is welded properly, the large heat sink is put in, as well as the thermal adhesive gel is applied evenly.
Examine the welding quality of the warmth-sensitive chip along with the modest warmth sink. The deformation of the large heat sink product will bring about inadequate heat dissipation of the chip and have an effect on the temperature variance. Determine 5-fourteen 4. Phenomenon: Single board detection chip is just not full (PT1/PT2 stations) a) Liquid crystal display Screen ASICNG: if (0), initially measure the overall voltage of your measuring area plus the Raise circuit 19V is usual, and afterwards use the shorter-circuit probe to small-circuit the RO check stage along with the 1V8 check position concerning the first and the second chip, and afterwards work the program to find the chip. Considering the serial port log, if 0 chip is still discovered right now, It will likely be certainly one of the subsequent predicaments: a-one) Make use of a multimeter to evaluate whether the voltages with the 1V8 and 0V8 test factors are one.8V or 0.8V. If not, it suggests which the 1.8V or 0.8V LDO circuit of this domain is irregular, or the two ASIC chips of the domain just isn't soldered properly; most of the are due to limited circuits of 0.8V, 1.8V patch filter capacitors (measure the resistance from the patch filter capacitors related to the back and front of your PCBA). a-2) Examine whether or not the circuits of U1 and U2 are abnormal, for example resistance welding, and so on.
a) LCD Show ASICNG: if (0), initially evaluate the entire voltage of the measuring area along with the Strengthen circuit 20V is ordinary, after which you can utilize the shorter circuit probe to brief-circuit the RO check issue and also the 1V8 exam point between the first and the 2nd chip, and afterwards work This system to find the chip. Check out the serial port log, if 0 chip continues to be identified at the moment, it will be among the following situations: a-one) Make use of a multimeter to evaluate whether or not the voltages with the 1V8 and 0V8 exam points are 1.8V or 0.8V. If not, it implies the 1.8V or 0.8V LDO circuit of the area is abnormal, or The 2 ASIC chips of this area is just not soldered effectively; most conditions of this phenomenon are caused by limited circuits of 0.8V, one.8V patch filter capacitors (measure the resistance in the patch filter capacitors related to the front and back on the PCBA). a-two) Look at whether the circuits of U2, U3 and U4 are abnormal, which include resistance welding, and many others. a-three) Measure the resistance of R232 or R233 with a multimeter to examine if it is in just one ohms plus the reading is not going to leap randomly. If not, remember to exchange these two resistors. a-4) Check When the pins of the main chip are soldered perfectly (it had been found in the course of repair the pins are tinned observing within the aspect, even so the pins are usually not stained with tin whatsoever in the event the chip is eliminated). b) If 1 chip are available in stage a), it implies that the main chip and the prior circuit are excellent. Use a similar method to check the subsequent chips. Such as, small-circuit the 1V8 examination point as well as RO check place in between the 38th and 39th chips. Should the log can discover 38 chips, the very first 38 chips don't have any challenge; if you continue to discover 0 chips, Examine the 1V8 initially; if It is normal, it means that there is a problem Together with the chips soon after 38. Go on to analyze with dichotomy until eventually the problematic chip is uncovered. Assuming that there's a difficulty Along with the Nth chip, if the 1V8 and RO among the N-1th and Nth chips are quick-circuited, N-1 chips are available, but in the event the 1V8 and RO between the Nth Buy Here and N+1th chips are limited circuited, all the chip can not be uncovered.
a) Liquid crystal display Display screen ASICNG: if (0), first measure the entire voltage on the measuring domain along with the Enhance circuit 20V is standard, then utilize the short circuit probe to small-circuit the RO exam position and the 1V8 check place between the main and the next chip, and after that function This system to locate the chip.
In the event the temperature exceeds this temperature, the miner will alarm and cannot operate Commonly. Frequently, you could Examine whether the drinking water outlet temperature exceeds 65 levels, and thermal conductive gel can also result in temperature abnormalities.
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Verify the welding good quality of the heat-delicate chip and also the tiny warmth sink. The deformation of the massive heat sink material will result in very poor warmth dissipation of the chip and impact the temperature difference.
If you do not comply with this order, it is vitally very easy to trigger harm to U1 and U2 (not all chips are available); Just before tests the sample, the repaired hash board should be cooled down right before testing, normally it will lead to screening PNG.
When using the chassis to dissipate warmth, 2 hashboards must be positioned simultaneously to variety an air duct. The one-sided test in the output also needs to make sure that the air duct is formed (vital).
In the event the miner is in the fault point out, you should Test the current log. If the miner is in a standard condition, it is suggested to question the historical log.
a) Change the voltage and frequency for the working voltage and frequency of The complete miner, Allow the miner accomplish mining, and Check out whether or not There's a lessen in the hash charge.
Check out whether or not the conductive copper bar is in bad Get hold of, Look at whether the electrical power Manage wire is free or destroyed, and swap the facility offer.
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