The Fact About s19 hash board repair That No One Is Suggesting
The Fact About s19 hash board repair That No One Is Suggesting
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This situation is mostly due to abnormal series resistance welding of CLK, CI, and BO within the front and rear on the X chip, so just focus on examining these 6 resistors. You will find a smaller likelihood that it is brought on by irregular welding of the next pins with the a few chips X-1, X, and X+1:
Repair system: Check out the appearance, measure the chip capacitor or resistance in front, typically It truly is because of lousy chip soldering or even a chip capacitor, resistor damaging or irregular resistance;
PatternNG is attributable to the large difference between the qualities of your chip and other chips. When the chip is ruined, it is often only essential to change the chip.
(three) Abnormal temperature: The utmost PCB temperature set by our monitoring technique are not able to exceed 90C/194T.
Should the chip’s look is just not broken, the chip with the bottom response charge in Every single area should get replaced.
Right after operating to get a time period, there isn't any hashrate, as well as link from the mining pool is interrupted, Verify the community.
four. Make the SD card Based on the necessities, double-sided heat sink, eight situations Parrer exam, you have to make the SD card as shown in the determine under:
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two. The maintenance operators should have selected electronic know-how, more than one 12 months of routine maintenance encounter, and become proficient in BGA/QFN/LGA package soldering technologies. three. Right after repairing, the hash board needs to be examined for greater than two situations to get Okay prior to it could possibly pass! four. Examine whether or not the resources and hash board testers can perform Ordinarily, determine the upkeep station to test application parameters, test fixture versions, and so on. five. Inside the take a look at of repairing and changing the chip, the chip needs to be examined to start with, and after that the operate test shall be performed right after passing. The purpose test need to be sure that the compact heat sink is welded experienced. When putting in the large warmth sink, the surface from the chip should be evenly coated with thermal gel and also the cooling lover shall be at comprehensive velocity. When using the chassis to dissipate heat, two hash boards must be placed concurrently to form an air duct. The one-sided examination from the manufacturing also needs to be sure that the air duct is formed (crucial). six. When measuring the signal, use four followers as assistance for warmth dissipation, as well as the fans shall manage whole speed. 7. When powering around the hash board, consumer should to start with join the adverse copper wire of the power source, then the favourable copper wire of the power offer, And eventually plug inside the sign cable. When eliminating, the get of set up need to be reversed. Initial clear away the sign cable, then get rid of the favourable copper wire of the power supply, and finally take away the destructive copper wire of the facility source. In the event the consumer will not comply with this get, it is vitally easy to trigger harm to R233, R232 (not all chips are available). Before tests the sample, the repaired hash board needs to be cooled down before tests, if not it might result in PNG. 8. To interchange a completely new chip, printing pins and soldering paste are needed to make certain the chip is pre-soldered and afterwards soldered on the PCBA for repair III. hash board Tester Making and Issues Needing Interest The supporting fixture of the hash board tester should fulfill the heat dissipation with the hash board and facilitate the measurement of alerts. 1. When using the 19 Professional examination fixture for the first time, you might want to use FPGA (create conversion file) to update the take a look at fixture to decompress the fpga file, copy each of the data files for the SD card, then insert it in the test fixture card slot, electrical power on for about 1 minute, and watch for the instruction gentle flashes a lot more than 3 instances to finish the update, then eliminate the SD card. Note: In case the update isn't accomplished, it may result in the take a look at fixture to prompt the identical chip error each and every time. 2: You should specifically decompress the conversion file and copy it towards the SD card. (Remember to format the SD card ahead of copying)
If the massive heat sink substance is deformed, it may cause lousy heat dissipation of your chip and have an affect on the temperature big difference.
Repair process: Using the dichotomy system, quick-circuit the 1V8 test place as well as the RO test issue among the 38th and 39th chips with the short-circuit probe. If your log can discover 38 chips, there is absolutely no issue with the 1st 38 chips; if short-circuiting 47 chips, however the log stories forty six, it indicates that the 47th chip cannot be detected, and there is no trouble With all the visual inspection. Commonly, the 47th chip shall get replaced;
Referring to your exam system document, the final difficulties are assembly procedure challenges and Management board procedure problems.
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