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How to test bridge Rectifier & check standby volts on power board using digital meter "dvm", just check multimeter in diode mode to read "bridge rectifiers", diodes, and transistors. also test bridge rectifiers in ac & dc mode on meter. if you have 5v stndby but no stdby led on tv then i would check main logic board, this works for Sony, Samsung, LG, Vizio ect..
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