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Training in the repair of power supplies for mining. 90% of the time is practical training, under the guidance of an experienced electronics engineer. Classes are held at the operating service center.
Switching power supplies of modern devices have a similar structure architecture. They consist of a fuse, varistor, input mains filter, limiting starting resistor, diode bridge, PWM controller, power switch, pulse transformer, output rectifiers and feedback to ensure the stabilization of output voltages.
Power supply units of miners differ in construction, due to the large power consumption of the connected devices.
During your studies, you will learn:
BITMAIN power supply recovery training
The methodology for diagnosing and repairing power supply units for mining have characteristic differences in the PFC, as well as in the output keys necessary for the formation of output voltages. The fan power supply circuit has high power.
During the training, we will consider the following stages of repairing the power supply unit “Ant”, APW3, APW7, APW8, APW9, APW9 +, APW12, AVALON, Innosilicon, no-name, ZT-1800, SURMA LW1900 PG90 PLUS GOLD, Whatsminer:
APW7-12-1800-A3
The algorithm for studying troubleshooting and conducting recovery work for power supplies for miners includes the necessary list:
Arrangement of elements on the board
APW7
A power supply is a complex electronic device designed to generate various stable voltages required to power various electronic components.
During the training, we will analyze common UPS failures, namely:
PSU faults
During training in diagnostics and repair, the following tools are used:
You should start by checking the serviceability of the auxiliary power supply + 12V, KKM, PWM controller, power circuit.
The power supply of the formation of 12 volts is possibly faulty. First, check the mains voltage. The training takes place in practice, the program contains a sufficient amount of fundamental knowledge necessary to conduct correct diagnostics and understand the operation of the UPS.
Overtemperature protection is most likely triggered. Pay attention to the operation of the fan. There may be internal dust from prolonged work and not carrying out routine maintenance. Inappropriate power supply or high ambient temperature. During the training, you will learn how to eliminate such breakdowns.
In a resonant source, the inverter is loaded onto an oscillatory circuit consisting of a choke, a primary winding of a transformer, and a capacitor. Check the waveform with an oscilloscope, if it differs from the desired diagram, eliminate the faulty element, re-check the waveform. Only then can the power switches – transistors – be soldered. The training program is built mainly on practice. You will be able to correctly troubleshoot PSU faults.
Possible undervoltage of the mains (160 – 190 volts). Because of this, the power protection is triggered. Check if the power supply unit has a short circuit at the output. Most likely there is an overcurrent.
To do this, you need to know the circuitry, make sure that other nodes are working. Use an oscilloscope and a PWM pulse generator. After completing training at Bgacenter, you will be able to independently identify faults in the transformer and its strapping.
You should start by checking the pins of the connection between the fan and the board. Make sure that the fan itself is working.
At the moment of switching on, the current protection is triggered. Instantaneous current exceeds the protection of the power supply.
It is possible to determine the ratings of components only if there is an electrical circuit diagram or an identical block. And also knowing the device, you can use the datasheet and build the harness.
In well-proven stores, online stores, from donors of the corresponding modules, where original and serviceable spare parts are clearly installed. On the course, we will start with this, we will tell you about trusted companies, both from Russia and from China, supplying spare parts for UPS repair for miners.
Loading...Board diagnostics, circuit reading, soldering of bga chips, cleaning of the compound, restoration of nickels and tracks
The electronics basics training program is designed for beginners to understand electrical and radio engineering.
You yourself, under the guidance of an experienced engineer, will assemble a mining farm, pick up components and accessories.