Power board not working but power light on.

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • rod.wa
    New Member
    • Aug 2014
    • 5
    • Canada
    #1

    Power board not working but power light on.

    Morning, I have a 2008 Sanyo 4232 Plasma TV , power board capacitors have all been replaced but still will not full power up. All internal parts are by Samsung but the power board is not ... . looking for wiring diagram for this TV , where would i look....Thanks Rod.wa

    here is a pic..https://www.badcaps.net/forum/attach...1&d=1418228970
    Attached Files
    Tags: None
    • nomoresonys
      Badcaps Legend
      • Jan 2013
      • 12274
      • U.S.
      #2
      Re: Power board not working but power light on.

      Originally posted by rod.wa
      Morning, I have a 2008 Sanyo 4232 Plasma TV , power board capacitors have all been replaced but still will not full power up. All internal parts are by Samsung but the power board is not ... . looking for wiring diagram for this TV , where would i look....Thanks Rod.wa

      here is a pic..https://www.badcaps.net/forum/attach...1&d=1418228970
      this might work. http://elektrotanya.com/?q=showresul...oria=&kat2=all not sure how it works, if you copy the address and paste it in your browser it should work.

        Comment

        • nomoresonys
          Badcaps Legend
          • Jan 2013
          • 12274
          • U.S.
          #3
          Re: Power board not working but power light on.

          Originally posted by nomoresonys
          this might work. http://elektrotanya.com/?q=showresul...oria=&kat2=all not sure how it works, if you copy the address and paste it in your browser it should work.
          my bad, looks like you just have to click on it.

            Comment

            • nomoresonys
              Badcaps Legend
              • Jan 2013
              • 12274
              • U.S.
              #4
              Re: Power board not working but power light on.

              what I do first is check all the voltages at the plugs to see it they are correct, you MUST BE VERY CAREFUL, the power supply has very high voltage on some parts, probably enough to kill, not sure.

                Comment

                • Shinju
                  Badcaps Legend
                  • Mar 2014
                  • 1239
                  • USA
                  #5
                  Re: Power board not working but power light on.

                  Do you have your 5v stand by and 12v voltages?

                    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
                    • howardc64
                      A1312 (27” iMac 2009-2011) A1407 (Thunderbolt Display) A1316 (Cinema Display) Display Black Screen Repair
                      by howardc64
                      Problem

                      This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached....
                      08-04-2024, 10:36 PM
                    • Rayblaster
                      HP RP7 RP7800 from 2012/2013 worst fault - has "character"
                      by Rayblaster
                      Hello friends, I've got a nice toy to play with - it is an HP RP7800 All-in-one POS system. I got it for free and it has one problem - it turns on very rarely, and just for a few seconds. After that it dies and doesn't come on if I don't leave it unplugged for at least 2 hours. I've repaired motherboards before, this is not my first one, but problem with these types of faults is that everything you check on the board will usually be fine. This is the case for me here.

                      I dissassembled it completely, and got my hands on the motherboard. Model No. is PIQ67H/Higgins 11047-I 48.3GD02.011....
                      12-30-2024, 06:28 PM
                    • JDC
                      (SOLVED) - ONN 100012588 No Power, Then Rebooting After Main Board Change
                      by JDC
                      ONN 100012588
                      Issue: No Power, Then Rebooting After Main Board Change

                      Short answer: replace main board and power board
                      Technical answer: replace main board and Q306 & Q307 on power board.

                      Long answer:

                      TV wouldn't turn on. Power switch was fine which means the main board isn't processing the power on signal. Replaced main board. TV turns on now but randomly reboots. Bad main board? EEPROM? Tried to pull main board and got a shock touching the corner of the board. That's weird. C334 (450V 10uf) capacitor is still holding a high charge....
                      07-15-2022, 07:39 AM
                    • maxim2511
                      LG 55EC930V OLED - swich on swich of no screen
                      by maxim2511
                      My Oled Tv is 55inch tv, 3 days ago I notice that middle of the screen is getting warmer and on picture I have ghosting, missing red color. Color red was still displaying, but it was not so strong as corners of the screen and watching some movies makes me angry.
                      Then I get an idea to take it apart and clean boards from dust.
                      In side of Tv was not so bad, I take compressed air in can, and gently blow up.

                      Also I was thinking to styrofoam sponge to isolate power board from screen that the middle of the screen will not worm so much. Because Led on screen when gets higher...
                      05-14-2021, 02:21 AM
                    • Loading...
                    • No more items.
                    Working...