7. Soon after repairing the hash board, the thermal gel on the drinking water cooling board needs to be taken off and reprinted.
Repair method: Examine the appearance, measure the chip capacitor or resistance in front, normally It is attributable to lousy chip soldering or maybe a chip capacitor, resistor detrimental or abnormal resistance;
In the case of a specific chip getting fastened, check for abnormal resistance welding from the front and rear CLK, CI, and BO of your Xth chip. In the event the examination time is nearly twice as long as The nice board, it may suggest a problem with soldering.
● Once the plan exam is passed (the brief-circuit examination of the general program check is important to avoid the chip or other materials remaining burnt due to brief circuit when the power is turned on), the chip examination may be carried out Using the hashboard tester, and also the positioning is usually determined according to the check result of the hashboard tester.
When the subsequent mistake message "fail to read through pic temp" seems from the log, it ensures that the PIC is irregular.
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Results from mining calculator are estimation based upon The present problems, block reward, and exchange rate for individual coin. Problems can manifest, so your financial investment final decision should not be based upon the outcome of the calculator.
Check the welding good quality of the warmth-sensitive chip plus the compact heat sink. The deformation of the big warmth sink substance will trigger lousy warmth dissipation of the chip and have an affect on the temperature difference.
two. Aging examination: During the growing older exam, repair should be performed according to the monitored interface test, for example:
2. The upkeep operators must have certain electronic expertise, multiple yr of routine maintenance experience, and be proficient in BGA/QFN/LGA deal soldering know-how. 3. Immediately after repairing, the hash board have to be tested for much more than two situations being OK right before it may pass! 4. Check out whether the tools and hash board testers can function Commonly, determine the upkeep station to test software parameters, examination fixture variations, and many others. 5. While in the test of repairing and changing the chip, the chip ought to be analyzed initial, then the function check shall be carried out just after passing. The perform check have to be certain that the compact warmth sink is welded capable. When setting up the massive warmth sink, the surface area in the chip need to be evenly coated with thermal gel and the cooling lover shall be at comprehensive velocity. When utilizing the chassis to dissipate heat, two hash boards should be put simultaneously to type an air duct. The one-sided test Order Here of the output must also ensure that the air duct is fashioned (critical). six. When measuring the sign, use 4 lovers as support for warmth dissipation, as well as lovers shall keep entire pace. seven. When powering about the hash board, person ought to very first join the adverse copper wire of the facility offer, then the good copper wire of the ability supply, And eventually plug while in the sign cable. When removing, the order of installation need to be reversed. Initial remove the signal cable, then take away the favourable copper wire of the power offer, And at last take out the negative copper wire of the facility supply. When the consumer don't comply with this buy, it's very easy to result in damage to R233, R232 (not all chips can be found). Before screening the pattern, the repaired hash board should be cooled down just before screening, normally it might trigger PNG. 8. To replace a brand new chip, printing pins and soldering paste are needed to make certain the chip is pre-soldered after which you can soldered into the PCBA for repair III. hash board Tester Earning and Matters Needing Consideration The supporting fixture in the hash board tester ought to fulfill the heat dissipation of the hash board and aid the measurement of alerts. 1. When using the 19 Professional check fixture for The 1st time, you might want to use FPGA (produce conversion file) to update the examination fixture to decompress the fpga file, duplicate each of the files to the SD card, then insert it in the take a look at fixture card slot, electrical power on for about one moment, and anticipate the instruction mild flashes more than 3 occasions to accomplish the update, then take away the SD card. Take note: If the update is not finished, it could cause the exam fixture to prompt precisely the same chip mistake when. 2: Be sure to straight decompress the conversion file and copy it to your SD card. (Make sure you format the SD card just before copying)
d-one) The initial case: the exam time is essentially similar to the good board (normally the value of X will not likely transform each time you check) (exam time refers to the time from when the beginning test button is pressed to the result of ASICNG: (X) shown within the Liquid crystal display).
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a) Liquid crystal display Screen ASICNG: if (0), initially measure the whole voltage in the measuring domain and also the Increase circuit 19V is normal, and then utilize the limited-circuit probe to quick-circuit the RO examination level and also the 1V8 exam place among the very first and the 2nd chip, and afterwards function This system to find the chip.