VO42l fhdtv10a flickering backlight after inverter swap

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • jwtlake
    Member
    • Jul 2014
    • 18
    • United States
    #1

    VO42l fhdtv10a flickering backlight after inverter swap

    Hey all.

    My back light went out again on my vo42l fhdtv10a.

    A year ago the Slave inverter went out and I replaced it with a used one on ebay. This time I took it apart and it looked like the master's integrated circuit blew.

    I bought a kit from ShopJimmy that came with both the Master and the Slave. Its an inverter from a newer model but they say its interchangeable.

    http://www.shopjimmy.com/lg-philips-...verter-kit.htm

    I installed both and now my TV is working again but the back light is flickering. It seems to stay on but the brightness pulses/flickers enough that its hard to watch. After playing around with it a bit today i realized that if I turn the brightness up from 85% to 100% then the flicking stops and everything is normal.

    Does that sound like I have some bad inverters or could there be something else going on? I'm trying to decide if I should send the parts back before my return window is up.

    Thanks All
    Last edited by jwtlake; 04-08-2015, 11:04 PM.
    Tags: None
    Previous template Next

    Related Topics

    Collapse
    • reessi
      ACER BM320 Monitor - Horizonal Flickering Lines After a While
      by reessi
      Hello,

      The monitor started off showing flickering thin (1 pixel) lines horizontally every say 3mm..

      They are black on the right and gradually fade to nothing on the far left.
      They start either after 5 mins or up to 2 hours after so annoying for testing.
      They flicker continuously very fast! With a slight pause milli-second every second.

      Initially I cleaned the LVDS cable and connected to the T-Con and then it worked fine for 3 weeks but not sure if this was just co-incidence.

      I tested each half by removing the first the left flex from...
      06-03-2025, 09:58 AM
    • x_orange90_x
      Vizio E55-E1 bad backlights or bad inverter?
      by x_orange90_x
      I just got this tv today and it appeared to have no backlight on. After taking off the rear cover and checking again in the dark I can see that MAYBE one quadrant is lit.. But still it's quite dim. I was going to check the LEDs with my tester, and I found LED 1 and LED 2 + pins on the wire from the inverter, but I couldn't identify a ground. Nonetheless I tried using a mounting screw on the inverter board and also the chassis as ground but regardless my tester reads 300 which is what it reads when there is no voltage draw.

      I don't know how exactly to test the inverter itself. Is it...
      01-29-2025, 09:24 PM
    • DrvLikHell
      Fixing an I-Inc IF281D for the 3rd time, now with added flickering!
      by DrvLikHell
      Hello everybody! It's been nine years and I'm back again with the same monitor that several people here helped me fix back then. The first time, I replaced two caps as was recommended here and the original problem was solved. Then it started acting up a few years later and I came back for a parts list and replaced a few more caps (I didn't make a post about that and don't remember which ones), and again the problem was solved. This time, however, I'm not sure if it's caps.

      The monitor stays on but certain colors will flicker. Generally it's darker colors like dark greys or dark blues,...
      07-05-2024, 02:54 AM
    • Gentian
      APSINT3636VR 3600W APS INT Series 36V DC 230V AC Inverter/Charger schematic
      by Gentian
      I have a tripp-lite aspint 3636vr inverter charger which blow some of mosfet transistors. I replaced them repaired also the driver circuit and tested but the mosfets burn again.

      It work very well as inverter and also as charger if I let the rear switch in auto mode (inverter) and charger only(charging) but in auto when I connect the feed line 220V AC first time it pass ok to line and start charging the batteries but when I remove the feed line it pass to inverter mode and if I do it again the second time when passing from charging to inverter the Main transformer start making a...
      03-06-2023, 07:07 AM
    • valvashon
      Insignia NS-LCD19-09 (PS OK, Inverter problem?)
      by valvashon
      For some reason I'm just not going to let this 19" TV defeat me. I guess because I have a schematic to work from I feel like I'm oh so close.

      History- while adding a turn-on circuit I let a small screw roll under the power board. Worked through all of that circuitry, probably replacing a MOSFET and PWM controller that were not bad but I was following the service manual. Finally figured out that the power supply is in working order when the inverter section (for the backlights) is disconnected. When the +12 supply to the inverter is disconnected the +12 and +5 will come up...
      1 Photo
      01-04-2024, 01:44 PM
    • Loading...
    • No more items.
    Working...