upstar p32etw no backlight

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Sniper82
    Member
    • Aug 2011
    • 27
    #1

    upstar p32etw no backlight

    I have a off brand TV that was given to me has picture and sound but no backlight. I tested the basic stuff like caps(visual) and fuses with a multimeter. The fuse on the inverter showed to be bad but was getting 24v on the hot side. Replaced the fuse and now I don't get 24v on either side or at the PSU. But if I remove the fuse the 24v comes back up to where the inverter fuse starts. Does it sound like a short in the inverter?

    I can get the inverter for $20 but am wanting some opinions on if its likely the cause or maybe the PSU.
    Tags: None
    • martino
      Not so "senior"
      • Aug 2013
      • 997
      • canada
      #2
      Re: upstar p32etw no backlight

      Yes,that sounds like a bad inverter...
      Proud owner of dozens of broken TV's and many,many,many boards.


      Our website and passion:http://hollenhundshepherds.com/

        Comment

        • Sniper82
          Member
          • Aug 2011
          • 27
          #3
          Re: upstar p32etw no backlight

          yeah went ahead and ordered the inverter. Works perfect now.

            Comment

            Previous template Next

            Related Topics

            Collapse
            • triplefour
              UN65TU700DF picture and sound but no backlight. BL tests ok but repl. PSU didnt fix!
              by triplefour
              this tv is throwing me for a loop. do samsung tvs no longer have the backlight self test feature built into the power supply?
              i tested the backlight with my LED tester and it lights up both strips. one of them reads 100v and the other reads 63.7v.
              unplugged mainboard from power supply but left backlight plugged in, and then plugged psu wall power in. expected to see backlights light up but see nothing.
              according to how ive diagnosed in the past, this would almost always be a bad power supply. replacement power supply was cheap like 20$ from ebay. but still i get not even...
              09-13-2023, 10:43 PM
            • triplefour
              TCL 75S421 has sound but no backlight not even a flash
              by triplefour
              TCL 75S421
              PSU BOARD: 40-L402H8-PWD1CG
              it shows not even a flash of backlight when powering up.
              but the tv appeas to turn on and i can hear the sound of the menus moving and clicking. i can power down the tv with the button.
              testing the backlights with my tester all 4 strings lit up and showed similar voltage drops. around 110 or so.
              unplug mb and leave only psu plugged into backlights (PSU + BL SELF TEST MODE?) does not light the backlights.
              i do see 24v but 0v on PSON and BLON (i didnt write this down tho so cant be sure)
              with mb connected, PSON...
              11-17-2023, 09:54 PM
            • ChaosLegionnaire
              what i went through dealing with my mobo with dead onboard sound!
              by ChaosLegionnaire
              so i took out one of my spare gigabyte ep35-ds3r mobos from storage for use to do some cpu, ram and video card testing of stuff i bought from ebay and got for free from momaka. he bought 50 e8400 cpus for cheap from ebay some years ago and i decided to help him relieve him of some of his supply since he had waaaay too many!! what did we say about hoarding too much stuff and depriving others of them?! *cough* socialism *cough* lol!

              i had to blow some dust off the board and heatsinks with the datavac as i didnt clean it up before putting it in storage. after finishing...
              09-13-2022, 09:02 AM
            • Mgiffune
              Samsung UN60EH6000F Black Screen, Backlight and Sound Good. Power Cycle Returns Picture
              by Mgiffune
              I have a 60 inch Samsung UN60EH6000F flatscreen TV. The screen went black a few months ago Sound is good, backlight is good, no menu. I replaced the TCon board with a used board purchased from Ebay. It worked fine for a 3-4 months, then the screen started ‘fading' back. Once again, sound is good, backlight is good, no menu. However, this time the picture looks fine for about 10-15 minutes, then fades back. If I power cycle the TV, the display reappears, for another 10-15 minutes, then fades black again. Repeatable ever time.

              I ordered a supposedly ‘new' Tcon board this time, and              ...
              06-09-2024, 10:28 AM
            • 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
            • Loading...
            • No more items.
            Working...