The best Side of antminer s19 pro hash board
The best Side of antminer s19 pro hash board
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38. Continue to utilize the binary system to check until finally the problematic chip is located. Assuming that there's a challenge Along with the Nth chip, when the 1V2 and RX concerning the N-1th chip plus the Nth chip are brief-circuited, the N-1 chip are available; Even so, when the 1V2 and RX involving the N and N+one chips are quick-circuited, the complete chip can not be uncovered.
Repair process: Test the looks, measure the chip capacitor or resistance in front, commonly It is due to weak chip soldering or simply a chip capacitor, resistor detrimental or abnormal resistance;
Prior to screening the sample, the repaired hashboard ought to great down in advance of tests; otherwise, it will cause testing NG.
a) Liquid crystal display Show ASICNG: if (0), 1st measure the entire voltage of the measuring area as well as Raise circuit 20V is typical, then utilize the brief circuit probe to brief-circuit the RO take a look at position and also the 1V8 take a look at issue among the primary and the second chip, and afterwards run the program to discover the chip. Check the serial port log, if 0 chip is still uncovered right now, it will be one of the subsequent cases: a-1) Utilize a multimeter to evaluate if the voltages with the 1V8 and 0V8 check points are 1.8V or 0.8V. Otherwise, it signifies that the 1.8V or 0.8V LDO circuit of this domain is irregular, or The 2 ASIC chips of the area isn't soldered effectively; most circumstances of this phenomenon are caused by short circuits of 0.8V, one.8V patch filter capacitors (evaluate the resistance in the patch filter capacitors connected to the front and back from the PCBA). a-2) Verify whether or not the circuits of U2, U3 and U4 are irregular, which include resistance welding, and many others. a-three) Measure the resistance of R232 or R233 with a multimeter to examine if it is within just 1 ohms plus the looking at will not likely jump randomly. If not, please swap both of these resistors. a-4) Look at In case the pins of the main chip are soldered very well (it had been observed in the course of repair that the pins are tinned observing from the aspect, even so the pins are usually not stained with tin in the least in the event the chip is removed). b) If one particular chip can be found in move a), it indicates that the very first chip and also the previous circuit are very good. Use an identical method to examine the following chips. For example, brief-circuit the 1V8 test level along with the RO test stage in between the 38th and 39th chips. When the log can find 38 chips, the very first 38 chips have no issue; if you continue to locate 0 chips, Test the 1V8 initially; if It is normal, it means that there is a problem While using the chips just after 38. Proceed to analyze with dichotomy until finally the problematic chip is observed. Assuming that there is a issue Together with the Nth chip, once the 1V8 and RO between the N-1th and Nth chips are shorter-circuited, N-one chips are available, but in the event the 1V8 and RO amongst the Nth and N+1th chips are shorter circuited, all the chip can not be Contact Here observed.
8. When changing a fresh chip, clean up the pins and implement solder paste to make certain the chip is coated with tin right before soldering.
If the miner nevertheless loses hashrate, lessen the frequency along with other conditions keep on being unchanged. Enable the miner mine to see if it will eventually lose hashrate and whether the hash board will hit X. If it nevertheless hits X in losing hashrate, then clear away the heat sink of your hashboard for mining and await the hashrate to fall.
three. After repairing, the hashboard needs to be analyzed for a lot more than two instances to get Okay just before it might pass!
Verify the serial port log, if 0 chip continues to be found presently, it will be one among the subsequent predicaments:
PS: Should the hashboard just isn't run or run off in accordance with the exam sequence, resulting in R8, R9, U1, and U2 to melt away out, the chip will report 0;
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Pre-tin the chip pins with solder paste to interchange a brand new chip and after that solder them to your PCB for repair.
The tactic for repairing The difficulty is as follows: in the PT2 exam, intently keep an eye on the serial port print log. Once the serial port is working for an prolonged period of time, use a brief-circuit probe to small-circuit RO and 1.
c) LCD Show ASIC75: (Reporting 75), it implies that the hash board can detect 76 chips at 115200 baud price, but only 75 chips are uncovered at 12M baud fee, and a person chip couldn't obtain at 12M baud charge; Repair system: Utilizing the dichotomy system, small-circuit the 1V8 exam issue as well as the RO test point between the 38th and 39th chips through the shorter-circuit probe.
On top of that, these pointers should also involve Directions on cleaning components with accepted solvents such as isopropyl alcohol or distilled water, together with how to retailer components clear of Intense temperatures and humidity stages safely and securely. Lastly, routinely scheduled servicing checks really should be carried out each handful of months or not less than annually to ensure the right operating of all parts inside the program.