Sony KDL-46W4000 (2 blink code)

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • funtastic
    Senior Member
    • Nov 2012
    • 63
    • New Zealand

    #1

    Sony KDL-46W4000 (2 blink code)

    Picked this set up for $10 hoping I could fix but was hoping it was the caps haha. Don't have too much knowledge about what to test.

    It's an LCD and when powering it on the relay clicks once with a green light and then gives red two blink code and relay clicks again. After it's just a constant two blink.

    Photo attached of the PSU & Main board

    Read that it's an over current protection error.

    Checked the voltage on the pins that connect to the main board and starting from the white wire it's 0.01v, 3.34, 3.38 then the rest is 0v.

    Disconnected the inverter board and t-con and it still gives blink code so that rules out them.



    Any ideas what I should do now?
    Attached Files
  • funtastic
    Senior Member
    • Nov 2012
    • 63
    • New Zealand

    #2
    Re: Sony KDL-46W4000 (2 blink code)

    anyone?

    Comment

    • AFajitas
      Senior Member
      • Dec 2014
      • 183
      • USA

      #3
      Re: Sony KDL-46W4000 (2 blink code)

      There should be a legend printed on the PCB for the connector going from the psu to main board that tells you what each pin should be. I think it's to the right of the connector and not visible in your pic. Can you take a picture of that? Also check fuses on PSU.

      Comment

      • funtastic
        Senior Member
        • Nov 2012
        • 63
        • New Zealand

        #4
        Re: Sony KDL-46W4000 (2 blink code)

        Here's the pictures of the connectors.

        Could anyone please give me an idea of what the fuses will look like or where they are? I suck i know :P
        Attached Files

        Comment

        • funtastic
          Senior Member
          • Nov 2012
          • 63
          • New Zealand

          #5
          Re: Sony KDL-46W4000 (2 blink code)

          The underside of the PSU
          Attached Files

          Comment

          • AFajitas
            Senior Member
            • Dec 2014
            • 183
            • USA

            #6
            Re: Sony KDL-46W4000 (2 blink code)

            Are you testing the voltages with the main board cable plugged in? Seems like you are missing some voltages.

            Comment

            • funtastic
              Senior Member
              • Nov 2012
              • 63
              • New Zealand

              #7
              Re: Sony KDL-46W4000 (2 blink code)

              Yes, when I tested it all cables were plugged in. Just unplugged for the pictures. Will test voltages again when green light is lit to see what is getting through

              Comment

              • budm
                Badcaps Legend
                • Feb 2010
                • 40746
                • USA

                #8
                Re: Sony KDL-46W4000 (2 blink code)

                https://www.badcaps.net/forum/attach...2&d=1422064925
                We need the Voltage reading of each pin number with its pin name next to each pin readings. The cables must be in place.
                The Voltage reading will be when the TV is plugged in but power switch is not activated, then after power switch is activated.
                We also need the pictures of the whole back side of the TV so we can see how all the boards are connected together.
                Attached Files
                Last edited by budm; 01-23-2015, 08:52 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

                • funtastic
                  Senior Member
                  • Nov 2012
                  • 63
                  • New Zealand

                  #9
                  Re: Sony KDL-46W4000 (2 blink code)

                  Plugged in with switch off

                  Power on - 0v
                  AC-OFF-DET - 3.37v
                  3.3V Standby - 3.37v
                  UNREG_15v - 0v
                  - 0v
                  UNREG_15v_GND - 0v
                  - 0v
                  REG12v_GND - 0v
                  - 0v
                  - 0v
                  REG12v - 0v
                  - 0v
                  - 0v


                  Top right connector

                  BALANCER-ERR - 0v
                  GND - 0v
                  INV-ERR - 0.06v
                  BACK-LIGHT-ON/OFF - 0v
                  DIMMER - 0.07v



                  Switched on

                  Power on - 3.30v then 0.01v
                  AC-OFF-DET - 3.35v
                  3.3V Standby - 3.37v
                  UNREG_15v - 0v
                  - 0v
                  UNREG_15v_GND - 0v
                  - 0v
                  REG12v_GND - 0v
                  - 0v
                  - 0v
                  REG12v - 0.01v then 0.00v
                  - 0v
                  - 0v


                  Top right connector

                  BALANCER-ERR - 0v
                  GND - 0v
                  INV-ERR - 0.27v then 0.06v
                  BACK-LIGHT-ON/OFF - 0v
                  DIMMER - 0.30v then 0.07v
                  Attached Files

                  Comment

                  • funtastic
                    Senior Member
                    • Nov 2012
                    • 63
                    • New Zealand

                    #10
                    Re: Sony KDL-46W4000 (2 blink code)

                    Thank you Budm, very helpful.

                    You and Tom66 helped me out fixing a tv a few years ago.

                    Comment

                    • budm
                      Badcaps Legend
                      • Feb 2010
                      • 40746
                      • USA

                      #11
                      Re: Sony KDL-46W4000 (2 blink code)

                      I am still trying to locate the diagram of the power supply board (A-1549-338-B), it looks like the PS_ON is present and then drops out.
                      Last edited by budm; 01-23-2015, 09:59 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

                      • funtastic
                        Senior Member
                        • Nov 2012
                        • 63
                        • New Zealand

                        #12
                        Re: Sony KDL-46W4000 (2 blink code)

                        any help? it has the same psu in it.

                        Page 44 & 45
                        Attached Files
                        Last edited by funtastic; 01-23-2015, 10:20 PM.

                        Comment

                        • budm
                          Badcaps Legend
                          • Feb 2010
                          • 40746
                          • USA

                          #13
                          Re: Sony KDL-46W4000 (2 blink code)

                          Did you hear the relay click when you activate the power switch?
                          BTW, I found the SCH of the power supply on the second file I down load from elektrotanya.
                          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

                          • funtastic
                            Senior Member
                            • Nov 2012
                            • 63
                            • New Zealand

                            #14
                            Re: Sony KDL-46W4000 (2 blink code)

                            Yes, it clicks once when switch is pressed and after the first set of 2 blinks it clicks again and that's when the above voltages change.

                            Comment

                            • budm
                              Badcaps Legend
                              • Feb 2010
                              • 40746
                              • USA

                              #15
                              Re: Sony KDL-46W4000 (2 blink code)

                              OK, please check the fusible resistor that I circle to see if it shows <1 Ohm, if it does then check the DC Voltage on the filter cap I circle, it should jump up to about 390VDC from 330V before it goes into shutdown, you will have to be real careful on this one since you are working on the primary side..
                              Attached Files
                              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

                              • funtastic
                                Senior Member
                                • Nov 2012
                                • 63
                                • New Zealand

                                #16
                                Re: Sony KDL-46W4000 (2 blink code)

                                After looking at the diagram and board for 30 minutes I need help locating the two parts you've circled.

                                Is the filter cap the largest capacitor?

                                How do I test a cap and ohms with the multimeter?

                                I've only ever tested voltage with putting negative on the chassis and positive on the pins.

                                Last time I tested something with 240v I made a cloud of black smoke haha so I'm a little cautious now.

                                Comment

                                • budm
                                  Badcaps Legend
                                  • Feb 2010
                                  • 40746
                                  • USA

                                  #17
                                  Re: Sony KDL-46W4000 (2 blink code)

                                  OK, you can test the resistor and Boosted Voltage on the primary side on the top side of the board, so it is easier, just do not touch anything with your hands.
                                  So check the resistor R6500 first (no power apply), then check the voltage when you hit the switch and watch your meter closely to see if the voltage does jump up >360VDC.
                                  Attached Files
                                  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

                                  • funtastic
                                    Senior Member
                                    • Nov 2012
                                    • 63
                                    • New Zealand

                                    #18
                                    Re: Sony KDL-46W4000 (2 blink code)

                                    316v with switch off - 394v switched on.

                                    Comment

                                    • funtastic
                                      Senior Member
                                      • Nov 2012
                                      • 63
                                      • New Zealand

                                      #19
                                      Re: Sony KDL-46W4000 (2 blink code)

                                      As soon as relay clicks the second time it goes back to 316v

                                      Comment

                                      • budm
                                        Badcaps Legend
                                        • Feb 2010
                                        • 40746
                                        • USA

                                        #20
                                        Re: Sony KDL-46W4000 (2 blink code)

                                        Originally posted by funtastic
                                        316v with switch off - 394v switched on.
                                        OK, that is good, the PFC Voltage booster is working but it goes into shutdown due to missing 12V power supply which runs on the boosted Voltage.
                                        So is the fusible resistor OK? R6500.
                                        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

                                        Related Topics

                                        Collapse

                                        • cloo
                                          Panasonic ZT60 plasma tv with strange behavior and 8 blink code
                                          by cloo
                                          I recently got my hands on a 60" Panasonic P60ZT60 plasma tv (european model) that has some strange issues along with an 8 blink code.
                                          It know this tv is getting old but it was once considered one of the best plasmas ever made, and i think it is still holds on to that even by todays standards.


                                          So, long story short. When i first got the tv it had a very bright washed out picture with very raised blacks in all picture modes and i couldn't find the cause in the picture setting menus.
                                          After doing a factory reset this problem was gone and the picture was back to...
                                          01-06-2025, 06:02 AM
                                        • reporter1979
                                          2 red blink code on old led tv Sony KDL-40W2000
                                          by reporter1979
                                          Hi all, the TV KDL-40W2000 was flashed by a lightning.
                                          Firstly I got the 3 red blink code.

                                          Following other threads I changed the power supply board and got always 3 blinks.
                                          So I changed also the mainboard and now I get 2 blinks error code. Tried also with the other ps board, still getting 2 blinks.

                                          The TV turns on for a minute or two with green led and blank screen, if I press buttons the green led blinks fast. It turns to 2 red blinking led after a while.
                                          What else can I do?...
                                          02-17-2023, 11:50 AM
                                        • Document Archive
                                          LCD LED TV Service Menu Codes
                                          by Document Archive
                                          ALL LCD LED TV SERVICE MENU CODES

                                          Service Menu Code with Board Name

                                          China Universal Board / Jumper Board Service Menu Code
                                          Changhong Ruba Service Menu Code
                                          Ecostar LED TV Service Menu Code
                                          Orient LED TV Service Menu Code
                                          Haier LED TV Service Menu Code
                                          TCL LED TV Service Menu Code
                                          Samsung LED TV Service Menu Code
                                          LG LED TV Service Menu Code
                                          Videocon LED TV Service Menu Code
                                          Supra LED TV Service Menu Code
                                          Toshiba LED TV Service Menu Code
                                          Symphony LED TV Service Menu Code
                                          Veste/ LED TV Service Menu Code...
                                          10-31-2024, 03:58 AM
                                        • Storyteller12
                                          Sony XBR-65X900E 4 Blink Code
                                          by Storyteller12
                                          Hi,
                                          I have this set. It turns on and is watchable for a few minutes but then shuts off and flashes 4 red lights.

                                          I don't work on Sony much but assumed it was backlights from what I read.

                                          Opened up the TV and tested all the backlights with led tester and the all work.

                                          I know sometimes that doesn't mean anything since it's not running at full current but I hate to spend $120 on backlights (shopjimmy) is the only one that even has them just to find out I missed something.

                                          So anyway to test these lights similar to the way we test...
                                          12-31-2022, 02:17 PM
                                        • Rensiee
                                          Panasonic TH-50PX8EA Black screen, only relay clicks
                                          by Rensiee
                                          Hello,
                                          I have been reading a few threads on here regarding Panasonic plasma tv's. I've found one thread which explains the same problem as mine, unfortunately the thread has not been completed.
                                          I got a free tv (TH-50PX8EA) from a friend which shows no screen. When plugged in only one red light shows up and when pushing the ON button, the red LED turns of and will only turn on again when pressing the ON button again.

                                          When plugging in the TV i hear two relays click fast and after a few seconds the third relay clicks.
                                          I have measured the voltage in the VSUS line, which...
                                          06-18-2024, 12:58 PM
                                        • Loading...
                                        • No more items.
                                        Working...