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Old 11-19-2020, 12:36 PM   #2
nomoresonys
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Join Date: Jan 2013
City & State: midwest
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Posts: 6,233
Default Re: Samsung UN43NU6100F

Maybe start with testing the voltages at the connector on the powerboard with the cables all hooked up, it's the connector that the cable from powerboard to mainboard hooks into, most times there's a legend/map nearby that gives the expected voltages, you measure them with your mutimeter, set meter to 20 vdc then report them, put neg probe on chassis metal ground, pos probe on pin of connector, measure in standby take note, leave probes where they are then power on tv and again take note of voltages, report them here, example pin 1-ps-on-0 volts standby-power on-3.3 volts.
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