④ Detect whether the pins of the very first chip are usually not soldered effectively (you can find tins on the pins through the side over the repair system, but following removing the chip, it's found the pins are usually not stained with tin);
Repair technique: Verify the appearance, evaluate the chip capacitor or resistance in front, commonly It is attributable to lousy chip soldering or perhaps a chip capacitor, resistor detrimental or abnormal resistance;
c) Liquid crystal display Display screen ASIC113: (Reporting 113), it implies that the hash board can detect 114 chips at 115200 baud fee, but only 113 chips are identified at 12M baud charge, and one particular chip couldn't be found at 12M baud price; Repair system: Using the dichotomy strategy, shorter-circuit the 1V8 check issue and also the RO check place between the 38th and 39th chips Together with the quick circuit probe. If the log can discover 38 chips, there is no problem with the 1st 38 chips; if shorter-circuiting the 47th chip, though the log studies 46th, it indicates that the 47th chip can't be detected, and there is no dilemma Along with the Visible inspection. Frequently, the 47th chip shall be replaced; Figure 5-15 d) LCD display ASICNG: (X, a specific chip is fixedly reported), There are 2 circumstances: d-one) The main situation: the exam time is largely similar to The nice board (commonly the worth of X won't alter every time you examination) (take a look at time refers to the time from when the start take a look at button is pressed to the time when the results of ASICNG: (X) is exhibited about the LCD). This case is probably going to be due to the abnormal resistance welding in the front and rear CLK, CI, and BO on the Xth chip, so buyers shall concentrate on these 6 resistors. The little probability is because of X-one, X, X+1, that may be, Amongst the a few chips, the next pins irregular welding ailments from the chip arise: Figure five-sixteen d-two) The 2nd case: the test time is almost twice as long as The great board (often the value of X will improve each time you take a look at, and often X=0); right now, the log normally has the following information and facts (the pink range isn't 13 someday, according to which seat the hash board tester is linked to); through the examination, presume that the domain voltage of the many fields in front of the irregular situation is sort of under 0.3V, as well as the domain voltage of your again fields are Nearly all bigger than 0.34V. This situation is caused by the chip not staying soldered properly, generally 1.8V, 0.8V, RXT, CLK aren't soldered perfectly. It is suggested to specifically evaluate the area voltage to Track down which domain is the trouble. The 1V8 and RO small-circuit approach Utilized in area a) could also Find the abnormal placement;
log-area voltage print command The precise functions are as follows: Open putty , enter the IP in the miner in question and click on OPEN Figure 6-7 2. Enter the person name, password and exam command to check the NONCE response status and also the status of voltage domain. Should the NONCE and domain voltage are abnormal, person can execute measurement and servicing based upon the printed irregular chip.
For the Liquid crystal display display ASIC75, shorter-circuit the 1V8 test stage as well as RO check stage involving the 38th and 39th chips. If shorter-circuiting forty seven chips, but the log reviews forty six, it suggests that the 47th chip can not be detected, and the 47th chip ought to be replaced.
(2) If the appearance of your chip is not harmed, just replace the chip with the lowest reaction amount in Every single area;
Look at the welding high-quality from the chip which connects sensor as well as modest heat sink. The deformation of huge warmth sink product will bring about inadequate warmth dissipation of the chip and have an impact on the temperature variation.
The D-Central team can be a perfectly-set up and recognized authority in matters of ASIC repair. Our Schooling System is personalized to equip men and women with the abilities they should deal with even the hardest repair Careers with assurance. The consulting services we offer supply our customers with qualified guidance and assist, permitting them to have the most out of their repair sessions.
We can even offer guidelines regarding how to use Putty software package to diagnose issues with the NONCE reaction standing and domain voltage amounts. With this information, you’ll have all the data required to keep the Antminer S19 jogging at optimum effectiveness.
Evaluate regardless of whether There exists output on the next pin of U3 plus the voltage is about three.3V; if Sure, you should continue on to troubleshoot the situation; if there isn't a 3.3V, please Test the connection position in the hashboard tester cable and also the hashboard is Okay, and reprogram the PIC.
Pre-tin the chip pins with solder paste to interchange a whole new chip and after that solder them to your PCB for repair.
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