Used ICs U1: OB2201CPA; U2: TL431 EAY62629102 LG Power Adapter Circuit Diagram and printed circuit board top and bottom view.
Schematic
Printed circuit board views
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LG 52LG50FD, 52LG50FD-SA-Service adjustments-service mode entry-white balance adjustment-ADC component 1 RGB adjustment and more
These adjustments are similar to 42LB7DF Because this is not a hot chassis, it is not necessary to use an isolation transformer. However...
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