Samsung S42AX-YB04 click noise

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  • Zizio|Kriminal
    Member
    • Jul 2014
    • 16
    • Italia

    #1

    Samsung S42AX-YB04 click noise

    Hi folks, I have a problem with my Samsung (Model S42AX-YB04). The TV turn on automatically and a relay makes a click noise every 15-20 seconds but no audio/video. No capacitors are blown in the power supply, and voltages in the power supply, X-Main e Y-Main seems to be OK. I've even tested the T-CON board by shorting the pins 3-4 and disconnecting the LVDS cable, and I see the test color pattern, that seems (i think) that the panel and T-CON board works properly.
    Now, my last try is to short the 5-6 pins on the eeprom located on the mainboard in order to reset it, and now the TV remain in standby, but if I try to power on with the remote the IR responds, but the tv won't turn on.
    Any suggestion?
    Thanks in advance (and sorry for my bad english )
  • jose6326
    Badcaps Veteran
    • May 2013
    • 707
    • USA

    #2
    Re: Samsung S42AX-YB04 click noise

    Post pics of the boards

    Comment

    • Zizio|Kriminal
      Member
      • Jul 2014
      • 16
      • Italia

      #3
      Re: Samsung S42AX-YB04 click noise

      Thanks for your reply. here's some pics of the boards (sorry for the quality of the image).
      Attached Files

      Comment

      • Zizio|Kriminal
        Member
        • Jul 2014
        • 16
        • Italia

        #4
        Re: Samsung S42AX-YB04 click noise

        UPDATE: I've read that there's a method to reset the eeprom located in the main board: the way is to shorting EEPROM's pin 5-8. Anyone has already tried that method?

        Comment

        • Zizio|Kriminal
          Member
          • Jul 2014
          • 16
          • Italia

          #5
          Re: Samsung S42AX-YB04 click noise

          UPDATE: I've changed the EEPROM of the main board with a new one, nothing happens: same problem. Anyone can help me?

          Comment

          • Alastair E
            Chief Womble
            • Mar 2013
            • 1963
            • U.K.

            #6
            Re: Samsung S42AX-YB04 click noise

            Have you installed any firmware in the eeprom before replacing it?

            What firmware did you use, where did you get it from? The set wont work without a good firmware in the EEPROM.....

            I think you have probably bricked the mainboard--by attempting shorting things out on it!
            Last edited by Alastair E; 07-26-2014, 01:08 PM.
            TELEFIX

            How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
            http://www.irf.com/technical-info/appnotes/an-1088.pdf
            PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!

            Comment

            • Zizio|Kriminal
              Member
              • Jul 2014
              • 16
              • Italia

              #7
              Re: Samsung S42AX-YB04 click noise

              the new EEPROM is blank, no firmware was previously installed. But as I read in many threads, in this EEPROM there are stored the settings of the TV, so performing a reset could unbrick the TV..
              There's an example:
              http://wiki.samygo.tv/index.php5/UnB...y_EEPROM_Reset

              Comment

              • Alastair E
                Chief Womble
                • Mar 2013
                • 1963
                • U.K.

                #8
                Re: Samsung S42AX-YB04 click noise

                Err--yes, But the operating firmware is also stored in that eeprom.

                Now--IF the operating F/W is corrupted, no resetting will ever help, as its--Well, Corrupted.

                Same would be case of a Blank eeprom. Processor first looks at eeprom, finds literally Nothing--so, It does exactly that--Nothing!

                TV sets, Computers, and all this electronic stuff--are in fact REALLY STUPID! The things cant do anything without instructions held in the F/W--Its their memory.....
                --What you have done by replacing eeprom with blank--is give the set Altzheimers!

                I would advise you either buy a new EEPROM complete WITH the Correct F/W for That Exact set--Or replace the whole mainboard.
                TELEFIX

                How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
                http://www.irf.com/technical-info/appnotes/an-1088.pdf
                PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!

                Comment

                • Zizio|Kriminal
                  Member
                  • Jul 2014
                  • 16
                  • Italia

                  #9
                  Re: Samsung S42AX-YB04 click noise

                  Uh, ok. Seems legit Thank you for your support. Now, all I need is to find the right firmware and a programmer..

                  Comment

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