Announcement

Collapse
No announcement yet.

Vizio GV42L HDTV blows fuses won't come on

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Vizio GV42L HDTV blows fuses won't come on

    Hi,
    I've never repaired a TV before and I'm pretty new to trying to fix electronics, though I can solder into a PCB and I can use a multimeter.

    I have a Vizio GV42L HDTV -- its an LCD flat screen. Its totally dead. I took it apart and the fuse was blown, so I replaced it. I didn't see anything else obviously wrong with the power board. When I plugged it bag in, I heard a variety of snapping-popping sounds without any signs of life from the TV. Taking it apart again, the fuse is blown but again no other obvious pathology on the power board.

    I attached some pics of the power board. What should I do next to figure out what is going wrong?

    Thanks,
    Grant
    Attached Files

    #2
    Re: Vizio GV42L HDTV blows fuses won't come on

    You need to start testing the power devices such as bridge rectifier, POWER MOSFETs, ETC. You have shorted out circuit some where on the board.
    I do not know how much of the component level troubleshooting you want to go, the new board is about $40.
    http://www.shopjimmy.com/vizio-0500-...wer-supply.htm
    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


      #3
      Re: Vizio GV42L HDTV blows fuses won't come on

      Oh, that's a much better price than I was finding!

      If I did want to test said components, is there a thread or guide you could recommend that would explain what they look like and how to test them?

      Comment

      Working...
      X