Hitachi ( Vestel) went in flames

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  • vitasik
    Member
    • Oct 2016
    • 30
    • UK
    #1

    Hitachi ( Vestel) went in flames

    Hi Everyone
    I am newbie to this forum, but I have been messing around with electronics since I can remember . Occasional tiny fire is common .

    Anyways what is bugging me today : Vestel sh*t (See Attached pictures)
    Full info:
    Hitachi 32HXC01U A
    PSU/LED driver : 17IPS19-P
    Main board: 17MB82-2
    Display: VES315WNDL-01

    I was given it with no picture, but supposedly had sound(never went to test the audio).
    My first thing was to try to see if led backlight was up – No it was not.
    While I was trying to measure the the PSU ON and backlight ON signals between boards- I got a tiny fire
    Vestel main board went smoking.

    Now to be fair this might have been my bad (not sure about this part). Nevertheless that resulted in charred U49 - no way to see its ID. Literally gone in fire and smoke. Now even LED stand-by indicator wont show any signs of life. From design U49 appears to be key part of a Buck power supply. If I am not mistaken it has both the mosfet and diod(possibly secondary mosfet) inside. Anyway – anyone has a clue what is its input and output voltage? I traced its output to both demodulator MT5135AE and CPU MT5820LUNU

    My Idea is to provide the correct voltage and if it switches on see if I can sort out the backlight. I am guessing is either 5v or 3.3v. Anyone hazards a guess?

    What other main boards can work with this display?

    P.S. While measuring I did see +24v supply being alive.... until the other board went smoking on me.
    Attached Files
    Tags: None
    • ReeceyBurger123
      Never Give Up !
      • May 2014
      • 7325
      • Britain
      #2
      Re: Hitachi ( Vestel) went in flames

      Lol tbh might just be easier to replace the mainboard with another that work with VES315WNDL IMO also check the Led drive voltage you might have a failed Led in the screen. Watch my videos on how to test this.

      Also others will swear you have to match every exact bar code number-you dont all you need to match is the connector from psu to mainboard and what panel it works for in your case is WNDL.

      Or if your wanting to sell the fucker I will buy it lol
      Last edited by ReeceyBurger123; 10-21-2016, 04:48 PM.
      Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

      https://www.facebook.com/Telford-Tel...7894576335359/

        Comment

        • dick_barton
          Badcaps Legend
          • Aug 2015
          • 6642
          • Wales
          #3
          Re: Hitachi ( Vestel) went in flames

          There appears to be quite a few components missing/burnt off the board when comparing it to the attached image. It may be easier to replace it than try and repair it.
          Attached Files
          Willing to help but I'm no expert.

            Comment

            • vitasik
              Member
              • Oct 2016
              • 30
              • UK
              #4
              Re: Hitachi ( Vestel) went in flames

              There are 4 components missing- one is the U49, the others were removed by me during my investigation.
              I did see ReeceyBurger's videos about failed LEDs, but unfortunately this LED driver (part of a) board isn't giving the output needed, hence i was looking into power on and brightness signal from the main board when it went in flames.

              P.S. I should apologize for the bad de-soldering - i am currently working with very limited tools as most of my stuff is back home a few countries away.
              Last edited by vitasik; 10-21-2016, 05:38 PM.

                Comment

                • vitasik
                  Member
                  • Oct 2016
                  • 30
                  • UK
                  #5
                  Re: Hitachi ( Vestel) went in flames

                  Hm lets try this the other way around- does anyone have datasheet/pinout for the mt5820 or mt5135 ????

                    Comment

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