Samsung LE32N73BD - 2 seconds to black

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  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK

    #21
    Re: Samsung LE32N73BD - 2 seconds to black

    Originally posted by multimeter
    tom,you said earlier,that there was a usb port,have you tried for a download off samsung website?it may show what version the firmware is,and compare to yours,a longshot i know.

    although i dont think its a firmware issue
    No firmware on Samsung's website. I'm not certain what the issue is either.

    I have noticed before it shuts down a lot of data gets read/written to the EEPROM. So it seems more like a controlled shutdown.
    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
    For service manual, schematic, boardview (board view), datasheet, cad - use our search.

    Comment

    • multimeter
      Badcaps Veteran
      • Jan 2011
      • 739
      • united kingdom

      #22
      Re: Samsung LE32N73BD - 2 seconds to black

      Originally posted by tom66
      No firmware on Samsung's website. I'm not certain what the issue is either.

      I have noticed before it shuts down a lot of data gets read/written to the EEPROM. So it seems more like a controlled shutdown.
      is that by scoping the eeprom?,or on screen?if scope that would be interesting to see,never even thought of how the read/write would look on a scope,hmm!
      fixed so far...376 lg lcd tv's,24 onn tv;s,24 panasonic lcd,16 jvc lcd,12 marshall jcm800 amps,refurb of various disco equipment lighting,old style disco decks ,and a flymo!

      ----------------------------------------------
      please let us know if everything works ok if your tv gets fixed, as it will be and aid for anyone else having the same problem and wishing to fix it.it would save people clogging up this site with topics that are duplicated,and can be found easily using the search function.,and taking up valuable space.enjoy your fixed tv!,hopefully!

      Comment

      • tom66
        EVs Rule
        • Apr 2011
        • 32560
        • UK

        #23
        Re: Samsung LE32N73BD - 2 seconds to black

        Originally posted by multimeter
        is that by scoping the eeprom?,or on screen?if scope that would be interesting to see,never even thought of how the read/write would look on a scope,hmm!
        EEPROM. SDA line, you can see it do a lot of stuff. Hard to film, I'll see what I can do...
        Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
        For service manual, schematic, boardview (board view), datasheet, cad - use our search.

        Comment

        • multimeter
          Badcaps Veteran
          • Jan 2011
          • 739
          • united kingdom

          #24
          Re: Samsung LE32N73BD - 2 seconds to black

          samsungs are quite good quality,but they are a pig to fix,i cringe sometimes when i get one,especially if there are main board issues,.

          samsung like to keep things close to the there chest,had a dig around the net,there is a couple of people trying to just get the main board and havent succeded,and this is going back to november2011.

          the closest thing i could find relating to your problem,was that they disconnected the panel,i assume from the t-con,booted up the tv,and it seemed to re-write the eeprom,and it worked for a while,then went back to normal
          fixed so far...376 lg lcd tv's,24 onn tv;s,24 panasonic lcd,16 jvc lcd,12 marshall jcm800 amps,refurb of various disco equipment lighting,old style disco decks ,and a flymo!

          ----------------------------------------------
          please let us know if everything works ok if your tv gets fixed, as it will be and aid for anyone else having the same problem and wishing to fix it.it would save people clogging up this site with topics that are duplicated,and can be found easily using the search function.,and taking up valuable space.enjoy your fixed tv!,hopefully!

          Comment

          • tom66
            EVs Rule
            • Apr 2011
            • 32560
            • UK

            #25
            Re: Samsung LE32N73BD - 2 seconds to black

            Okay, forced the B/L on. Now this is interesting. I get a full frame of analogue snow, but then it fades to black (T-con power cut.) After it warms up, I sometimes get no frame at all, or half/quarter frame. So, something is warming up and going out of spec, perhaps some reset IC or protection detect.

            I already disconnected the T-con to no effect but I will try again.
            Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
            For service manual, schematic, boardview (board view), datasheet, cad - use our search.

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK

              #26
              Re: Samsung LE32N73BD - 2 seconds to black

              Here's something interesting. Didn't notice this before, but SDA line flurries with activity just BEFORE the picture shows, not after. Picture goes out without any SDA activity...

              Only reset IC is for sub-micom but it's okay, tested with scope.
              Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
              For service manual, schematic, boardview (board view), datasheet, cad - use our search.

              Comment

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