then disconnect the connector only on the mainboard end that has the ps-on and 5vstb going to it and put 1 end of the resistor in the ps-on and 1 end in the 5vstb and power on the tv
Yes you need to perform the test with the resistor to see among other things if the mainboard is pulling down that 5.1v supply or if the psu is to blame.
We can pinpoint what board is at fault once done... Anything from 470ohms to 1kohm will do.... Even if they are taken from an old board. I have a feeling the psu is at fault.... Disconnect the entire main to psu connector and power the set on from the mains first... I have a feeling you will still have more than 1 voltage present
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