The smart Trick of antminer s19 hashboard That Nobody is Discussing
The smart Trick of antminer s19 hashboard That Nobody is Discussing
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Solder paste column M705, flux, board washing drinking water with absolute Liquor; board washing water is made use of to scrub up the solder residue soon after repair; thermal gel (specification: Fujipoly SPG-30B) is accustomed to smear the surface with the chip after repair ；ball-planting steel mesh, solder absorption wire, solder ball (the ball diameter is usually recommended for being 0.
Repair process: Test the looks, measure the chip capacitor or resistance in front, generally it's due to poor chip soldering or possibly a chip capacitor, resistor damaging or abnormal resistance; VI. Control Board Trouble Resulting in the subsequent Problems one. The complete miner does not get the job done 1) Look at whether the voltages at a number of voltage output details are normal. U8 could be disconnected very first if three.3V is short-circuited. If it is still shorter-circuited, the CPU can be unplugged for measurement. For other voltage abnormalities, usually switch the corresponding converter IC. 2) If your voltage is typical, be sure to Test the welding standing of the DDR/CPU. 3) Try to update the flash program with SD card; In the event the miner of which the Management board has actually been reflashed ought to commence Typically, the subsequent two ways are essential: a) After the card Restoration is handed, the environmentally friendly LED indicator will probably be usually on, and the power shall be restarted; b) Await 30s right after powering on once more (the time study course of turning on OTP).
; Next, once the visual inspection is handed, the impedance of each voltage area might be examined initial to detect whether There's a small circuit or an open up circuit. If uncovered, it has to be addressed first. In addition, Examine if the voltage of each domain is about 0.36V.
Measure irrespective of whether There may be output on the 2nd pin of U3 as well as voltage is about 3.3V; if Indeed, remember to go on to troubleshoot the condition; if there isn't any 3.3V, you should Examine the relationship status of your hash board tester cable and the hash board is OK, and reprogram the PIC.
eight. When changing a whole new chip, clear the pins and apply solder paste making sure that the chip is coated with tin ahead of soldering.
Or the two ASIC chips With this domain are usually not soldered correctly. A lot of them are a result of limited circuit of 0.8V and 1.2V patch filter capacitors (measure the resistance from the patch filter capacitors connected to the front and back sides of the PCBA).
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(two) Next, if there isn't a problem just after Visible inspection, you may to start with exam the impedance of each and every voltage area to detect Get It Here no matter if You will find a quick circuit or open circuit. If uncovered, it needs to be handled initially.
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a-three) Evaluate the resistance of R8 or R9 that has a multimeter to examine whether it is within just ten ohms as well as reading through will not likely soar randomly. Otherwise, you should swap both of these resistors. a-four) Check out If your pins of the main chip are not soldered well (it was located in repair the pins are tinned observing through the side, however the pins aren't stained with tin in the least if the chip is eliminated). b) If 1 chip are available in phase a), it suggests that the primary chip as well as the previous circuit are superior. Use an identical technique to examine the subsequent chips. Such as, limited-circuit the 1V8 check place along with the RO check place among the 38th and 39th chips. Should the log can find 38 chips, the 1st 38 chips have no challenge; if you continue to discover 0 chips, Test the 1V8 initial; if It is really typical, it means that there is a challenge Using the chip soon after 38. Carry on to research with dichotomy until eventually the problematic chip is found. Assuming that there's a dilemma Using the Nth chip, once the 1V8 and RO amongst the N-1th and Nth chips are limited-circuited, N-1 chips can be found, but when the 1V8 and RO between the Nth and N+1th chips are short circuited, the whole chip cannot be found.
a) LCD Display screen ASICNG: if (0), first evaluate the overall voltage on the measuring domain and also the Increase circuit 19V is normal, and then utilize the limited-circuit probe to quick-circuit the RO check stage and the 1V8 exam position among the first and the next chip, and after that work the program to locate the chip.