Onn le32lcd0802id

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • fruitbat04
    Senior Member
    • May 2014
    • 50
    • UK
    #1

    Onn le32lcd0802id

    So after the last TV I fixed, I've got the bug a bit and bought another broken TV for a few quid off ebay. The symptoms were that the picture went off, then the sound, and now it's totally dead.

    I've had the back off and the problem is pretty obvious from the pictures. You can see the burning on the cable between the power board and the inverter.

    In addition, there is continuity between the pins circled in red between themselves, and also the ones circled in green.

    Would I be right in thinking these should not be shorted and that's the cause of the burning? So a new inverter board and cable would be the solution?

    thanks



    Tags: None
    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA
      #2
      Re: Onn le32lcd0802id

      They are connected in parallel to handle the current required by the inverter circuit. You also bad cap C1 (c2 looks like its on its way also) the bottom seal is coming off, you should replace those caps on the inverter board, and also inspect the caps in the powwer supply board or replace them as a set. The burnt is due to poor connector high contact resistance. You should also replace the headers otherwise you have to clean the pins really well.
      Last edited by budm; 06-02-2014, 01:37 PM.
      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

        • fruitbat04
          Senior Member
          • May 2014
          • 50
          • UK
          #3
          Re: Onn le32lcd0802id

          Inverter part number is KLS-EE37TKH16

            Comment

            • fruitbat04
              Senior Member
              • May 2014
              • 50
              • UK
              #4
              Re: Onn le32lcd0802id

              So you think the problem is just capacitors? I can obviously change them all but I'd be interested how they could cause that fault.

              Also, is there a place to buy replacement cables, or a way to make them up yourself?

              Thanks

                Comment

                • Agent24
                  I see dead caps
                  • Oct 2007
                  • 4913
                  • New Zealand
                  #5
                  Re: Onn le32lcd0802id

                  Originally posted by fruitbat04
                  So you think the problem is just capacitors? I can obviously change them all but I'd be interested how they could cause that fault.
                  Lkely their failure upset the operation of the circuit and caused it to draw too much current, burning the wires.
                  "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                  -David VanHorn

                    Comment

                    • fruitbat04
                      Senior Member
                      • May 2014
                      • 50
                      • UK
                      #6
                      Re: Onn le32lcd0802id

                      Cheers all. Got the parts in yesterday, basically new pin header for the PCB, pins and housing for the cable and a couple of capacitors.....

                        Comment

                        • fruitbat04
                          Senior Member
                          • May 2014
                          • 50
                          • UK
                          #7
                          Re: Onn le32lcd0802id

                          Bah, not completely solved.

                          Initially everything was fine and I could turn it off, but now hitting power off on the remote, TV or letting it go to auto shut down just hangs on "Turning off, please wait".

                          Any ideas how to troubleshoot?

                            Comment

                            • fruitbat04
                              Senior Member
                              • May 2014
                              • 50
                              • UK
                              #8
                              Re: Onn le32lcd0802id

                              After leaving it unplugged for a few hours, it doesn't seem to be doing that anymore. Am just running it in for 24 hours before moving it on.

                                Comment

                                Previous template Next

                                Related Topics

                                Collapse
                                • 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
                                • 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
                                • eccerr0r
                                  A modified sine wave inverter + a grid tie inverter?
                                  by eccerr0r
                                  If I had a solar fed grid tie inverter (GTI), a modified sine wave inverter, and a power outage occurred, what would happen if you disconnected mains, backfed the modified sinewave inverter (MSI) into house power, and hooked up the GTI to the output of the MSI, would it work?

                                  Next thing is trying to charge the batteries using solar power, but that's another issue ...
                                  08-31-2023, 09:14 PM
                                • caseyjay_48
                                  Sony KDL-46BX450 Inverter Troubleshoot Logic
                                  by caseyjay_48
                                  I am currently on a troubleshoot of 46” Sony KDL-46BX450 tv. I came back from Washington to Texas on medical emergency and had to leave all my tools up there. All I have is a couple of screwdrivers and a dvm. I wish to ask the community a troubleshooting question. Please forgive stupid questions as meds I am taking produce brain fog.
                                  I have well maintained Sony KDL-46BX450. It went black one day. After turn-on, I get solid green light and Sony logo in screen center for about 1-2 seconds, then black. No blinking LEDs, no hissing. Flashlight test shows screen characters dimly viewable,...
                                  09-23-2022, 08:08 PM
                                • Loading...
                                • No more items.
                                Working...