Details, Fiction and s19 hash board repair
Details, Fiction and s19 hash board repair
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38. Carry on to utilize the binary technique to check right up until the problematic chip is identified. Assuming that there is a dilemma While using the Nth chip, once the 1V2 and RX in between the N-1th chip and also the Nth chip are limited-circuited, the N-1 chip are available; Nonetheless, once the 1V2 and RX in between the N and N+one chips are shorter-circuited, the full chip cannot be observed.
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② Visually inspect no matter whether you can find noticeable signs of burnt pieces, parts impression offset or lacking elements, etc.
six. The repaired hash board ought to be examined by using a test fixture, and it should pass greater than two occasions to generally be judged as a very good products. For the first time, just after changing the equipment, look ahead to the hash board to chill down, use the examination fixture to test, and when is handed, place it on one particular facet prior to cooling down. The 2nd time, await the hash board to cool down completely just before tests.
To summarize, the repair system for the hash board includes regimen inspection, chip take a look at, fault localization, and tests and verification. By these ways, the faulty chip is often Positioned and repaired or replaced, plus the hash board is usually analyzed to guarantee it is functioning thoroughly.
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Our substitution hashboards are not merely refurbished, they are upgraded to make certain superior performance and trustworthiness than the first. Each hashboard goes by way of a rigorous Restoration system that makes them much more dependable than new types straight from your producer.
(one) A sudden ability outage or under 30 seconds through the entire process of opening OTP will cause the control board to fall short to open the OTP functionality and the Command board will likely not start out (not hook up with the world wide web).
2. Enter the consumer title, password and take a look at command to check the NONCE response position and the position of voltage domain. If the NONCE and area voltage are abnormal, person can accomplish measurement and servicing determined by the printed abnormal chip.
2. The maintenance operators must have specific electronic information, multiple 12 months of routine maintenance encounter, and become proficient in BGA/QFN/LGA deal soldering technology. three. Soon after repairing, the hash board has to be examined for a lot more than two occasions being Okay just before it could pass! four. Check whether or not the applications and hash board Buy Now testers can get the job done Generally, determine the maintenance station to check software parameters, check fixture variations, and so forth. five. In the examination of repairing and changing the chip, the chip really should be tested initially, after which the purpose test shall be carried out right after passing. The operate exam need to be sure that the compact warmth sink is welded competent. When putting in the large warmth sink, the area from the chip must be evenly coated with thermal gel and also the cooling enthusiast shall be at total speed. When utilizing the chassis to dissipate heat, 2 hash boards ought to be put simultaneously to sort an air duct. The only-sided test of your manufacturing also needs to make sure the air duct is shaped (crucial). six. When measuring the sign, use four admirers as assistance for warmth dissipation, along with the lovers shall maintain complete speed. seven. When powering about the hash board, user have to first link the negative copper wire of the ability source, then the favourable copper wire of the power offer, And eventually plug during the signal cable. When eliminating, the buy of set up has to be reversed. To start with eliminate the signal cable, then take out the good copper wire of the power provide, And at last take out the damaging copper wire of the power provide. When the user usually do not comply with this buy, it is vitally easy to cause damage to R233, R232 (not all chips can be found). In advance of tests the pattern, the repaired hash board should be cooled down ahead of testing, or else it might result in PNG. eight. To switch a fresh chip, printing pins and soldering paste are essential making sure that the chip is pre-soldered after which you can soldered to your PCBA for repair III. hash board Tester Producing and Matters Needing Attention The supporting fixture with the hash board tester ought to fulfill the heat dissipation of your hash board and facilitate the measurement of alerts. 1. When utilizing the 19 Professional take a look at fixture for the first time, you need to use FPGA (generate conversion file) to update the exam fixture to decompress the fpga file, copy many of the files into the SD card, then insert it to the test fixture card slot, electricity on for approximately 1 minute, and look forward to the instruction light flashes more than 3 periods to accomplish the update, then take away the SD card. Note: In the event the update will not be done, it could bring about the test fixture to prompt the identical chip mistake when. two: You should right decompress the conversion file and duplicate it to your SD card. (Be sure to structure the SD card right before copying)
● When locating the faulty chip, the chip should be welded all over again. The tactic is to incorporate flux round the chip (ideally no-cleanse flux), and warmth the solder joints in the chip pins into a dissolved condition to prompt the chip pins and pads to re-run in and collect the tin, so as to attain the impact of tinning once more. When the fault remains the identical soon after re-soldering, it is possible to right switch the chip.
The strategy for repairing The problem is as follows: over the PT2 take a look at, closely monitor the serial port print log. Once the serial port continues to be functioning for an extended length of time, use a short-circuit probe to short-circuit RO and one.
(one) Make use of the APW12 ability source (APW1212V-15V and power adapter cable) to build a test platform: Use thick copper wires for your optimistic and damaging poles of the power supply, and after that link the PSU as well as the hash board.
1. Check with the voltage worth vary described via the signal pattern. Should the measurement encounters a substantial deviation from the voltage price, it might be in contrast Along with the measured value of the adjacent group to determine.