Samsung 58" UN58J5190AFXZA Bad Mainboard

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  • Texas Blues
    Member
    • May 2010
    • 13
    #1

    Samsung 58" UN58J5190AFXZA Bad Mainboard

    Hey guys. Bought a 58" Samsung UN58J5190AFXZA that didn't work (real cheap). It was unclear exactly what didn't work, only that it "suddenly" stopped working. I also confirmed that the screen was not damaged, so thought it was worth a look. Upon plugging it in to see what it would do, it came on and was on the tv input, only I had to use the joystick on back to turn it on, it would not respond to the remote (remote works fine on my other Samsung tv). I plugged in some rabbit ears and let it program the tuner and that worked. Then I changed to the HDMI input and that's what didn't work. It would not receive from either of the two HDMI ports. I then tested the Screen mirroring with my samsung phone, and that worked. Used the joystick again to change back to the HDMI input and tried again, nothing. Turned off unit and came back later. This time I was going to do a firmware update but discovered it was stuck in HDMI mode and would no longer respond to the joystick (could no longer get into menu, change inputs ect). Could not even turn it off with joystick.
    Appears to be a main board issue with the rom or something, just wondering if any of ya'll have seen this condition? Thanks TB
    Tags: None
    • dskall
      Badcaps Legend
      • Oct 2016
      • 2905
      • usa
      #2
      Re: Samsung 58" UN58J5190AFXZA Bad Mainboard

      I had similar problem. Tv would freeze on HDMI input then become unresponsive. Turned out to be a damaged HDMI port.
      I assume no responsibility for any stupid suggestions I might post.

        Comment

        • neilc6
          Badcaps Legend
          • Nov 2015
          • 1550
          • Canada
          #3
          Re: Samsung 58" UN58J5190AFXZA Bad Mainboard

          Yeah does sound like a bad main board. That model does have backlight failures that pop at transistor on the PS like UN58H5202. Make sure you don't run the backlights at max and look for dark patches with a clear white image to check for burnt out LEDS.

            Comment

            • Texas Blues
              Member
              • May 2010
              • 13
              #4
              Re: Samsung 58" UN58J5190AFXZA Bad Mainboard

              Thanks guys, I have ordered the main board. Will be able to check the brightness setting when I get back into the menu. My other Samsung 46 is set at factory defaults at about 70%. Supposed to get the board in on Wed, but not holding my breath due to the Christmas shipping rush. Will post results after main board installation. TB

                Comment

                • Texas Blues
                  Member
                  • May 2010
                  • 13
                  #5
                  Re: Samsung 58" UN58J5190AFXZA Bad Mainboard

                  Follow up guys. I replaced the main board. I now have remote control response, can get into menus, can auto program the receiver for the local DTV channels. Have yet to try an HDMI input source, but will soon.

                  Now for the thing that started to happen after about 5 minutes of being on. The back lighting started to flicker slow at first, then increased in frequency to the point they would go out. Seems to be a breakdown in the PS/led back light circuit, or a bad led/strip. So on to the next episode! TB

                    Comment

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