Seiki SE50FY28 No Video Power Control Board mixed up

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Gadjet
    Badcaps Veteran
    • Aug 2012
    • 248
    • United States
    #1

    Seiki SE50FY28 No Video Power Control Board mixed up

    Ok this tv came in with no power, no standby light. I had a replacment power supply and that did nothing because the power contol board and the rf board both run to a connection on the mainboard so I replaced the mainboard. Now I get the red standby light but when I click the power button I get nothing. So I decide to hit all of the buttons and when i click the vol.up button the standby light turns blue and the tv powers on, but no picture, and I don't even see a backlight.
    Attached Files
    Tags: None
    • selldoor
      Slow Learner
      • Dec 2010
      • 7870
      #2
      Re: Seiki SE50FY28 No Video Power Control Board mixed up

      Can you post pictures of the labels on both main boards
      Can the cable from the on/off be connected the wrong way?
      Please upload pictures using attachment function when ask for help on the repair
      http://www.badcaps.net/forum/showthread.php?t=39740

        Comment

        • Gadjet
          Badcaps Veteran
          • Aug 2012
          • 248
          • United States
          #3
          Re: Seiki SE50FY28 No Video Power Control Board mixed up

          Pics left to right the first one is the old main board 2nd one is the new one. 3rd pic is the control board / rf connector with the white dot that I'm guessing should be pin #1 along with the arrow on the board. Doesn't seem that it can be plugged in the wrong way
          Attached Files

            Comment

            • selldoor
              Slow Learner
              • Dec 2010
              • 7870
              #4
              Re: Seiki SE50FY28 No Video Power Control Board mixed up

              Well may be good news and terrible news.
              Sadly good news is the cable can only be plugged in one way.
              Terrible news is I think your replacement board is for a 47 inch Seiki.
              see here http://www.shopjimmy.com/catalogsear...ult/?q=35J0788
              Please upload pictures using attachment function when ask for help on the repair
              http://www.badcaps.net/forum/showthread.php?t=39740

                Comment

                • Gadjet
                  Badcaps Veteran
                  • Aug 2012
                  • 248
                  • United States
                  #5
                  Re: Seiki SE50FY28 No Video Power Control Board mixed up

                  So you think the control board pin set might be different on the other model? didn't match the M/O # and the C/N #

                    Comment

                    • selldoor
                      Slow Learner
                      • Dec 2010
                      • 7870
                      #6
                      Re: Seiki SE50FY28 No Video Power Control Board mixed up

                      The main board eeprom probably has a different dataset and drivers for the size of screen.
                      SJ are pretty good at saying which boards is for which set they do have both and they only mention the one set for each board.
                      If you got your board from them they will probably let you exchange it.
                      Please upload pictures using attachment function when ask for help on the repair
                      http://www.badcaps.net/forum/showthread.php?t=39740

                        Comment

                        • Gadjet
                          Badcaps Veteran
                          • Aug 2012
                          • 248
                          • United States
                          #7
                          Re: Seiki SE50FY28 No Video Power Control Board mixed up

                          I finally got a chance to change out this board with one with the exact same board information as the original just to have it do the same thing as the wrong board. So now I'm guessing that I need to change the firmware for the board but can't find it. Anybody have a clue or know how I can get it?

                            Comment

                            • nuala
                              Member
                              • Aug 2013
                              • 37
                              • USA
                              #8
                              Re: Seiki SE50FY28 No Video Power Control Board mixed up

                              Seiki: http://www.seikidigital.com/support/downloads.php

                                Comment

                                • Gadjet
                                  Badcaps Veteran
                                  • Aug 2012
                                  • 248
                                  • United States
                                  #9
                                  Re: Seiki SE50FY28 No Video Power Control Board mixed up

                                  Yeah I looked here didn't see the model number.

                                    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
                                    • m1ch43lzm
                                      HP Pavilion 15-eh Board DAG7HAMB8F0 - CPU throttling to 0.4GHz (PROCHOT_EXT) and black screen
                                      by m1ch43lzm
                                      Hi, this is my personal laptop, which the original board (lets call it Board A) blew up PU8700 (TPS51486), making a hole on the board, i had left the laptop at my desk one day with the battery fully charged and didn't touch it for a week, but when i tried to turn it on it didn't
                                      Thought the battery was dead, so i plugged in the charger then tried to power on, the power LED blinked once, charged LED still orange, unplugged the charger, plugged in again and I noticed the "magic smoke" smell, so i unplugged the charger, removed the back cover and saw the blown IC (the "magic...
                                      05-12-2025, 08:37 PM
                                    • Yanleb
                                      LG 60PK550 Logic Control Board EBR63450301
                                      by Yanleb
                                      Hi all, I just want to share the repair of my 60PK550-UA TV set.

                                      The TV set was powering on, just no image. After verification, nothing wrong on the YSus or ZSus boards. Nothing wrong on the main board either.

                                      But I noticed that the LED was not flashing on the Logic Control Board. This is an EBR63450301. The LED is supposed to flash even with all the flat cables disconnected, with only the power cable attached.

                                      All the voltages measured at the electrolytic capacitors on the board were good. From top left to bottom right:
                                      C57: 3.30V
                                      C61:...
                                      07-20-2023, 12:38 AM
                                    • howardc64
                                      TCL 55S425 few horizontal lines, potential failure on both side of panel/buffer board
                                      by howardc64
                                      All left and right refers to looking from rear of TV (or looking from front with TV upside down)
                                      • TV came with vertical bars and no image. Found faulty TVS on left buffer board. Also replaced T-Con (may have damaged the original while hot air removing components, board has slight warp) and have full image but few horizontal lines on the screen. Some of the lines appears to be 2 pixel tall while others are 1 pixel tall.
                                      • Disconnecting left and right buffer board potentially reveals problems on both sides with different signals (unless this T-Con require jumper like Samsung FB_TRDY1&3) Fault
                                      ...
                                      07-24-2025, 05:17 PM
                                    • sam_sam_sam
                                      Linear Garage Door Opener Control board took a crap install a new control board back normal
                                      by sam_sam_sam
                                      I have been having issues with this garage door opener for a while first the range of the remote was a lot less and sometimes it would start to go down and stop for no reason that I could find and would every once in awhile to start with then it started going more frequently until last Saturday when I opened the garage door it refused to close so I cranked up force all the way maximum limit this did not work also the sensor on one side that has a green and red lights that are supposed to be on when the door is open and there are no obstacles in the way on the original board the only light that...
                                      02-08-2025, 06:52 AM
                                    • Loading...
                                    • No more items.
                                    Working...