Vizio VW26LHDTV20F Power Board Failure

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Xavier Renowned
    Member
    • Aug 2011
    • 15

    #1

    Vizio VW26LHDTV20F Power Board Failure

    I have a 26" Vizio LCD and have found blown parts and they are; the, what i am going to call a diode, but may be something else, in position Q1, Resistor in position R1, and another resistor in position R113 underneath the big electrolitic capacitor.

    The board numbers are:9MN1261AFC0TN3LF, HIPRO HP-N1261A201 LF REV: 02, and 2007.11.07

    It appears that either one of the resistors blew and took the diode with it, or the diode blew taking the resistor with it.

    In the pictures, the tranformer and the diode heat sink are pulled out along with the burned out resistors. The circled area is the position of resistor R113.

    I will be testing the fuses and transformer and replacing the diode and resistors

    I will post back with the transformer readings.

    My question is, what is the rating and type of resistor in posistion R113, because it is blown beyond recognition and should I be wary of other problems with the board after replacing these peices if the transformer isn't bad?
    Attached Files
  • PlainBill
    Badcaps Legend
    • Feb 2009
    • 7034
    • USA

    #2
    Re: Vizio VW26LHDTV20F Power Board Failure

    The Q component is a transistor, not a diode. This type of damage can be the result of a power surge, other components may also be damaged. As a rough guess, the parts you have found will cost less than $10, while replacement power supplies are available on eBay for under $50. The problem is identifying the values of the badly damaged parts, and locating any other parts that may also have been damaged.

    PlainBill
    For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

    Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

    Comment

    • Xavier Renowned
      Member
      • Aug 2011
      • 15

      #3
      Re: Vizio VW26LHDTV20F Power Board Failure

      Will the testing of the transformer be a logical step to finding the faulty componenets if not what else should i test?

      Comment

      • Xavier Renowned
        Member
        • Aug 2011
        • 15

        #4
        Re: Vizio VW26LHDTV20F Power Board Failure

        R1 is fractured and the transistor is being order but i yet have to identify the value of the resistor in R113

        Comment

        • Dgtech
          E. Technician
          • Apr 2009
          • 1462
          • Steeler

          #5
          Re: Vizio VW26LHDTV20F Power Board Failure

          Service manual of this set should tell you the value in a schematic. Other than that, I'd ask a seller of the board on ebay to check that value for you. I've had luck with that approach in the past.
          The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS

          Comment

          • Bobby
            New Member
            • Nov 2011
            • 1

            #6
            Re: Vizio VW26LHDTV20F Power Board Failure

            I have the same problem with Vizio power suply board Model VW26lHDTV20f, Q1 is blown out. The value of R113 is 2k ohm. That is the one that is under the big cap. Now I would like to know where to purchase Q1. Since I tried my local electronic distributor it was not available, not in stock. The replacement for that is FS7Km-16A, also Nte 2960, all these items are not in stock. I tried to purchase the power supply board these also are not in stock. Any suggestion will be most appreicated. Thank you. Bob

            Comment

            • Dgtech
              E. Technician
              • Apr 2009
              • 1462
              • Steeler

              #7
              Re: Vizio VW26LHDTV20F Power Board Failure

              I copied and pasted "FS7Km-16A" into ebay search and found 16 results. You should order it there if you can't find it cheaper.
              The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS

              Comment

              • Xavier Renowned
                Member
                • Aug 2011
                • 15

                #8
                Re: Vizio VW26LHDTV20F Power Board Failure

                Thank you for all your help as I am now using it.

                Comment

                Related Topics

                Collapse

                • sam_sam_sam
                  Mitsubishi CNC switching power supply board dead / relay board bad diode failure
                  by sam_sam_sam
                  I was working on this CNC machine today found no keyboard functioning no control relay powering on
                  The screen powered on and was giving an operation error but the manual was not very clear about what the error exactly was but with a little bit of troubleshooting and finding out that the control relays not powering on and no keyboard functions we narrowed down to this one switching power supply which of course does not have any indicator LED light they are on the keyboard interface/relay controller board

                  Found shorted diodes on main controller relays there are 3 of them that...
                  01-07-2023, 05:43 PM
                • Nr4ps
                  Vizio DPS-167DP-1 failure
                  by Nr4ps
                  I'm trying to troubleshoot a DPS-167DP-1 A power supply board from a Vizio M552i-B2 tv. The tv would no longer turn on, and I found the usual melting on IC901, with D950B and ZD909 shorted and R915 open. Sounds like this is a pretty common failure, so I replaced all four components expecting it to be an easy fix but it's still not working.

                  I checked D801 and it's fine. I get about 170V DC across the main filter capacitor C800A. I'm not getting any voltage on the 5V standby pins in connector CN101, nor any voltage on the VCC pin of IC901, which is presumably why it's not working --...
                  01-26-2024, 03:53 PM
                • Tynan Dill
                  Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?
                  by Tynan Dill
                  I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.

                  Upon bringing it home and plugging it up, it showed a standby light.

                  I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.

                  The screen seems to blackout and stay black, but with a flashlight I can see the display.

                  With my Playstation 4 connected via HDMI, and running a game I can hear sound.

                  Assuming...
                  11-22-2024, 01:46 PM
                • howardc64
                  Vizio M65Q7-H1 Red Vertical Strips fixed by tape blocking LC1 signal to half of the panel
                  by howardc64
                  Failure Symptom



                  No picture, just red vertical stripes. Google search shows quite common problem for these recent Vizio M series although red vertical stripe pattern may differ. Some call it "Netflix" boot screen haha.

                  Where is the short?

                  Panel has 4x buffer boards. Quickly found the 1/4 panel buffer board with the problem by selectively disconnecting buffer board flex cables.



                  Having recently fixed another Vizio with similar symptoms that was a shorted ESD diode array ( link ) Probed the ESD diode array but...
                  05-27-2025, 02:56 PM
                • SS454
                  vizio e650i-a2 backlight flashes then turns off
                  by SS454
                  vizio e650i-a2 (LWJAOZBP Serial) led backlight flashes then turns off, has video (via flashlight) and audio.

                  panel: au optronics T650HVN05.4
                  72 led total on 12 strips, 6 led per strip wired in three groups of 24 (led driver board has three anode and three cathode pins)
                  link to datasheet: https://datasheetspdf.com/pdf-file/8.../T650HVN05.4/1

                  Vizio 56.04219.641G (liteon PA-3231-01WN-LF) Power Supply Unit
                  https://www.shopjimmy.com/vizio-56-0...-power-supply/

                  Vizio 55.75J01.001G (91.75J10.004G) Main Board...
                  08-20-2020, 03:57 PM
                • Loading...
                • No more items.
                Working...