This is a magnetic bead, which functions as a high-frequency loss inductor. It exhibits high impedance to high-frequency noise (acting as a resistance) and suppresses high-frequency radiation.
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hello, a customer damage his RD6012 when assemble it with input PSU, the connection cables touch the Power board, in this way many chips are burned, we do not recommend to repair, after confirming the main board is ok, we replace a new power board, and normally replacing a new power board needs to calibrate again for accurate output.
