5. During the examination of repairing and replacing the chip, the chip needs to be tested 1st, after which you can the operate take a look at shall be performed right after passing. The purpose examination will have to make sure the little warmth sink is welded certified. When setting up the big heat sink, the surface from the chip needs to be evenly coated with thermal gel and the cooling enthusiast shall be at complete pace.
a) Following the flashing is successful, the eco-friendly LED indicator light is usually on, and afterwards the power is turned off and restarted;
When the miner whose Handle board is flashed has to start out Commonly, the next two measures are necessary:
a) LCD display ASICNG: if (0), very first measure the entire voltage of the measuring area and the Improve circuit 20V is usual, and afterwards utilize the brief circuit probe to short-circuit the RO examination position as well as the 1V8 examination position amongst the main and the second chip, after which function This system to locate the chip. Test the serial port log, if 0 chip continues to be observed at the moment, Will probably be considered one of the next conditions: a-1) Make use of a multimeter to measure if the voltages for the 1V8 and 0V8 take a look at points are one.8V or 0.8V. If not, it implies the one.8V or 0.8V LDO circuit of this area is irregular, or the two ASIC chips of the domain just isn't soldered effectively; most problems of the phenomenon are brought on by short circuits of 0.8V, 1.8V patch filter capacitors (measure the resistance of the patch filter capacitors linked to the back and front from the PCBA). a-two) Check out whether the circuits of U2, U3 and U4 are irregular, including resistance welding, and many others. a-3) Evaluate the resistance of R232 or R233 using a multimeter to check if it is within just one ohms and the looking at won't jump randomly. Otherwise, you should swap both of these resistors. a-four) Test In the event the pins of the primary chip are soldered perfectly (it absolutely was uncovered for the duration of repair the pins are tinned observing from your side, however the pins are not stained with tin at all in the event the chip is eliminated). b) If 1 chip are available in move a), it suggests that the initial chip as well as former circuit are very good. Use the same technique to check the subsequent chips. For example, shorter-circuit the 1V8 test place plus the RO examination place amongst the 38th and 39th chips. In the event the log can discover 38 chips, the first 38 chips don't have any difficulty; if you still obtain 0 chips, Verify the 1V8 initial; if It truly is regular, it means that there's a problem with the chips after 38. Carry on to analyze with dichotomy until finally the problematic chip is identified. Assuming that there's a trouble Together with the Nth chip, once the 1V8 and RO between the N-1th and Nth chips are short-circuited, N-1 chips are available, but once the 1V8 and RO involving the Nth and N+1th chips are shorter circuited, your entire chip can't be observed.
In case the chip’s visual appearance is not broken, the chip with the bottom reaction level in each domain ought to get replaced.
Should the miner that takes advantage of the Manage board flashing should commence Generally, the next two steps are demanded:
The following fault examples are from Antminer 19 collection mining machines, other Antminer products are for reference only.
8. To replace a new chip, printing pins and soldering paste are required to make sure that the chip is pre-soldered and afterwards soldered towards the PCBA for repair
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six. Following the repair, the hash board has to pass a lot more than two moments for being judged as a great item when analyzed via the examination fixture. For the first time, just after changing the add-ons, wait for the hash board to cool down, utilize the take a look at jig to test the pass, and afterwards set it apart to cool down. The 2nd time, wait a few minutes for that hash plate to cool fully prior to screening all over again.
(one) When ASICNG=(0) is shown: initial evaluate the overall voltage in the area along with the 19V Enhance circuit is regular, and then use a short-circuit probe to shorter Inquire Now the RX examination level and 1V2 test place in between the No.
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● Following the regime exam is handed (the shorter-circuit exam of the final regimen examination is critical to stay away from the chip or other resources remaining burnt due to the short circuit when the power is turned on), the chip check may be executed While using the hash board tester, as well as positioning is usually determined based on the take a look at result of the hash board tester. ● In accordance with the shown outcomes of the hash board tester detection, starting from close to faulty chip, check the chip take a look at points (CO/NRST/RO/XIN/BI) and voltages which include VDD0V8 and VDD1V8. ● According to the sign movement, except for the RX signal, reversely transmit the sign (from No. 76 to No. 1 chip), quite a few in the signals which include CLK CO BO RST are forward transmission (1-seventy six), and also the abnormal fault issue can be found from the electrical power offer sequence.