Antminer Repair: How to Test BM1397 Chips with a Power Supply and Multimeter скачать в хорошем качестве

Antminer Repair: How to Test BM1397 Chips with a Power Supply and Multimeter

Here, we’ll learn how to test the internal circuit of a used ASIC chips Before starting, we need to ensure that the chips are not hot We start by turning the chips face-up and cleaning the pads with isopropyl alcohol Then we inspect the contact pads on every chip and save the ones that need to be reballed Checkout the last step of our video on how to pre-tin chips,    • Antminer Repair: How to properly tin your ...   Then we need to set our power supply to 1.36 V and 10 Amps We’re going to read the current drop on the power supply’s display To do so, we can use the alligator clips that comes with the unit You can also plug the probes of your multimeter directly on your PSU A third option would be to use a multimeter and the PSU displays by clamping the alligator clips onto the probes Don’t let the probes touch each other, shorted chips can arc and burn The largest contact pad of the ASIC chip is the ground and the second-largest is the positive pad We put probes on the respective pads and read the current drop out A normal ASIC chip behaviour would show the current drop below 2 Amps and rise slowly A broken chip could have an internal short circuit that would lower the resistance The lower resistance would result in a current drop above 2 Amps If the current drops below 2 Amps but doesn’t rise slowly, this could also indicate damage To be precise (after the drop) the current should rise by about 50 milliamperes per second --- Our selection of ASIC chips: 100x BM1397 recycled ASIC chips for T17/S17/T17+/S17+ https://d-central.tech/product/bm1397... New chips: https://d-central.tech/product/bm1397ah/ https://d-central.tech/product/bm1397ag/ https://d-central.tech/product/bm1397ai/ https://d-central.tech/product/kf1921/ https://d-central.tech/product/kf1930/ https://d-central.tech/product/t4u48/ https://d-central.tech/product/t1668b/ https://d-central.tech/product/qa1800/ https://d-central.tech/product/qa1001b/ https://d-central.tech/product/bm1362aa/ https://d-central.tech/product/bm1391ae/ https://d-central.tech/product/bm1398bb/ https://d-central.tech/product/bm1485/ https://d-central.tech/product/bm1387be/ https://d-central.tech/product/bm1387b/ https://d-central.tech/product/bm1393b/ --- Visit our website: https://d-central.tech/ --- Learn more about our ASIC repair service https://d-central.tech/mining-repairs/ --- Join our Discord   / discord   --- Follow us on Twitter   / dcentraltech