{1011} EMERSON R481800A Power Supply, No output voltage

in this video number {1011} EMERSON R48-1800A R481800 Power Supply No output voltage, i repaired Emerson R481800A 48V 1740 watt power supply, it was not providing output voltage. smps controller ic 28C43 found burnt-out. i replaced with 3843 SMD ic. it is part of Netsure 211 C46 48V 1kw-4kw Power Supply System Emerson Vertiv
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