hitachi ves420undl

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  • llonen
    Badcaps Veteran
    • Sep 2014
    • 495
    • hampshire
    #1

    hitachi ves420undl

    I have one of these in the workshop with bad LED's, can some one point me in the direction of which LED's I need as I need to replace three or four devices on the strip board. Below is a close up of some of the good strips, are these 6 or 3 volts etc.

    Many thanks in advance
    Attached Files
    Last edited by llonen; 10-26-2018, 05:24 PM.
    Tags: None
    • Andrew F. Ali
      Badcaps Legend
      • Jan 2014
      • 2450
      • Trinidad & Tobago
      #2
      Re: hitachi ves420undl

      Most likely these are 3V. we may be able to help if we could see clear, focused photos of the PSU. I personally prefer to change out the entire strips rather that replace just the bad LEDs as soon enough you would get a failure again and have to re-open the Panel again. Unless you are changing out ALL the LEDs on EACH strip.

        Comment

        • vinceroger69
          Badcaps Legend
          • Mar 2012
          • 6714
          • uk
          #3
          Re: hitachi ves420undl

          you could really do with removing one good led measure it for size and find out if the large or small solder pad is the anode pad, 6 new led strips works about about £55.00 on ebay, if you want just the replacement leds try sending this guy a message hes very helpful
          https://www.ebay.co.uk/usr/microtech...88.m1543.l2754
          Last edited by vinceroger69; 10-27-2018, 02:04 AM.

            Comment

            • llonen
              Badcaps Veteran
              • Sep 2014
              • 495
              • hampshire
              #4
              Re: hitachi ves420undl

              I don't tend to buy replacement strips from Ebay as mostly they are pulls and of unknown hours I have all smd equipment to remove and rework these panels and have been doing so for some time. What information did you need from the PSU

                Comment

                • vinceroger69
                  Badcaps Legend
                  • Mar 2012
                  • 6714
                  • uk
                  #5
                  Re: hitachi ves420undl

                  i guess by the led connector do you know the lcd panel number as we could look at the panel specs too and yes agree most strips seem too be puled from smashed sets but the ones i mentioned was new ones its all about the resealable price of the tv too i guess and yes i tend too just replace the leds i just use hot air and soldering iron i should really buy myself a hot plate though.

                    Comment

                    • Andrew F. Ali
                      Badcaps Legend
                      • Jan 2014
                      • 2450
                      • Trinidad & Tobago
                      #6
                      Re: hitachi ves420undl

                      From the PSU there would be a silk screen print that would say the Voltage and the Current to the LEDs.

                        Comment

                        • llonen
                          Badcaps Veteran
                          • Sep 2014
                          • 495
                          • hampshire
                          #7
                          Re: hitachi ves420undl

                          Sorry for the delay, here is the panel details as requested and panel itself
                          Attached Files

                            Comment

                            • vinceroger69
                              Badcaps Legend
                              • Mar 2012
                              • 6714
                              • uk
                              #8
                              Re: hitachi ves420undl

                              what psu number is used in this set can you remove one good led and measure its physical size and find out which is the large pad anode or cathode

                                Comment

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