rca LED55G55R120Q no picture lights on sound works

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  • stuffinabox
    Member
    • Dec 2017
    • 12
    • United States
    #1

    rca LED55G55R120Q no picture lights on sound works

    have here a rca 55 inch on power up backlight comes on no picture other times has picture sometimes after 10 minutes from a unplugged state

    power supply seems to be working 155 v on led both banks 12v and 5v both there power to main and tcon seems ok. mosfets all test good. thinking this is a mainboard issue possibly eeprom as the intermittent function
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    • stuffinabox
      Member
      • Dec 2017
      • 12
      • United States
      #2
      Re: rca LED55G55R120Q no picture lights on sound works

      nobody is interested? ok changed the caps on the mainboard and frc came on once then no video again second reboot. found a frc and mainboard for under 50 waiting on them now.

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        • freakaftr8
          Badcaps Legend
          • Oct 2012
          • 3743
          • USA
          #3
          Re: rca LED55G55R120Q no picture lights on sound works

          This most likely sounds like a mainboard issue. What's command pin doing during This? Ps_on?
          Try jumping ps-on to ground with connector disconnected from main board?
          Last edited by freakaftr8; 02-25-2018, 03:35 PM.
          Did I leave the soldering iron on?

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