Vizio VS42L -- Pop and no video

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • HarvesterOfBeer
    New Member
    • Jun 2013
    • 5
    • USA
    #1

    Vizio VS42L -- Pop and no video

    I have a 2008 vintage Vizio VS42L television. Last night while watching, it emitted a *pop* and the screen went dark. No sound, no video.

    When I plug the unit in, I hear a relay click, and the logo LED comes on. When I press the "power" button, I hear another click, but no display/sound.

    I pulled the power supply and the main board. No defects were apparent on the main board. On the power supply, I found this chip. Image attached.

    This doesn't look normal...

    With everything installed and the tv on, I get the 5V standby, but none of the other voltages from the power supply are on. No 24V to the inverters, etc.

    Guidance from the hive mind? Get a replacement power supply?

    Thanks!
    Attached Files
    Last edited by HarvesterOfBeer; 06-09-2013, 11:47 AM.
    Tags: None
    • jetadm123
      Badcaps Legend
      • Feb 2010
      • 2169
      #2
      Re: Vizio VS42L -- Pop and no video

      If you could please post a photo of the entire power supply and it's part number, then maybe someone can ID that chip.

        Comment

        • HarvesterOfBeer
          New Member
          • Jun 2013
          • 5
          • USA
          #3
          Re: Vizio VS42L -- Pop and no video

          The power supply is part DPS-283BP. Here's a link to the part from ShopJimmy:

          http://www.shopjimmy.com/vizio-0500-...wer-supply.htm

          I'm suspecting that the chip itself was ok, and that something else caused too much juice to flow through there...

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA
              #4
              Re: Vizio VS42L -- Pop and no video

              That IC is the SMPS IC for the 12v/24v power supply section, more likely that you also have two shorted out power MOSFET's which are driven by the IC. When the MOSFET shorted out, it dumped close to 400VDC into the Gate drive output pins of the IC, resistors/diode at the Gate drive of the MOSFET''s are likely to be damaged. You will be better off to get new power supply.
              Never stop learning
              Basic LCD TV and Monitor troubleshooting guides.
              http://www.badcaps.net/forum/showthr...956#post305956

              Voltage Regulator (LDO) testing:
              http://www.badcaps.net/forum/showthr...999#post300999

              Inverter testing using old CFL:
              http://www.badcaps.net/forum/showthr...er+testing+cfl

              Tear down pictures : Hit the ">" Show Albums and stories" on the left side
              http://s807.photobucket.com/user/budm/library/

              TV Factory reset codes listing:
              http://www.badcaps.net/forum/showthread.php?t=24809

                Comment

                • HarvesterOfBeer
                  New Member
                  • Jun 2013
                  • 5
                  • USA
                  #5
                  Re: Vizio VS42L -- Pop and no video

                  Ok, thanks! I'll go track one down. Looks like ShopJimmy is out of stock, unfortunately...

                    Comment

                    • Pamela
                      New Member
                      • Apr 2011
                      • 9
                      • USA
                      #6
                      Re: Vizio VS42L -- Pop and no video

                      Found a few on eBay...

                      Link to search I did...

                      http://www.ebay.com/sch/i.html?_odkw...-0331&_sacat=0


                      And a few results....


                      Vizio 0500-0507-0331 Power Supply for VU42LFHDTV10A


                      http://www.ebay.com/itm/Vizio-0500-0...item3a8136a7da

                      http://www.ebay.com/itm/Vizio-0500-0...item4ac56f347a
                      Pamela

                        Comment

                        • Pamela
                          New Member
                          • Apr 2011
                          • 9
                          • USA
                          #7
                          Re: Vizio VS42L -- Pop and no video

                          @HarvesterOfBeer

                          Let me know how you make out with any of the links I gave you for the power supply.
                          Pamela

                            Comment

                            Previous template Next

                            Related Topics

                            Collapse
                            • 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...
                              ORIGINAL POWER SUPPLY BOARD
                              7 Photos
                              11-22-2024, 01:46 PM
                            • sam_sam_sam
                              Desoldering gun station modified to use a 18 volt @ 20 amp switching power supply
                              by sam_sam_sam
                              I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump

                              One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy...
                              03-31-2024, 02:12 PM
                            • larSS
                              MSI MS-16JF no video memory power supply
                              by larSS
                              Hello! Has an msi ms-16JF motherboard with a diagnosis "doesn't work". There were a short-circuit on video memory lane. Removed GPU and video memory, changed TPS51916 and transistor on it's lane. Motherboard works OK, has the initialization and video card voltage. But has no video memory voltage. Should there be a video memory voltage without video chip or no? Has the S5 signal 3.3V on TPS51916
                              10-28-2023, 09:24 AM
                            • leonada2008
                              ASUS TUF3 video memory power supply failure
                              by leonada2008
                              ASUS TUF3 3 fan version, under high load, image loss, black screen, flash back, large area of video memory reports unknow error, suspected to be video memory power supply failure, now request a boardview, thank you
                              ...
                              04-23-2025, 01:59 AM
                            • JaquesPratt
                              Vizio D32f-E1 Powers on, has backlight, won't boot/no logo, no menu or video
                              by JaquesPratt
                              I have a Vizio D32f-E1 LCD TV that does NOT have a TCON board.

                              This TV recently went through some 'death throes' and now won't boot. The first problem that began to manifest was while watching tv, the screen would 'freeze', and the image would dim over a few seconds until it was very dark. HOWEVER, the audio of the show would continue as normal. I could power off the TV for 5-20 seconds, power back on, and the video would be normal. This would occur 1-3 times when the TV was first started, and would not happen again after the TV was 'warmed up'. Not ideal, but this glitch was manageable....
                              07-16-2024, 01:04 AM
                            • Loading...
                            • No more items.
                            Working...