Sony Bravia KDL-46W5500 no picture or sound

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • petttu
    Member
    • May 2013
    • 10
    • finland

    #1

    Sony Bravia KDL-46W5500 no picture or sound

    So I got from a friend this bravia, with a fault that it has no picture. The green led comes on, but no backlight or sound. After a minute or so it shuts down and starts blinking red led(first 1 time then a second delay then 13 times and a second delay, and then it starts blinking 14 times with a one second delay at a loop). So I have taken the back cover off and measured the voltages of the main board(though the error code suggest t-con, panel or inverter/balancer?).

    In CN6150 (Mainboard) and CN6151 (T-con) everything is ok, but CN6701(inverter) the FB(feedback?) lines are at 0 volts, LD lines are at 11,5 volts and the vcc_12v is 12 volts. But the high voltage line read 0 volts.
    In the CN6154 Dimmer line is at 2,3 volts, backlight on/off is at 0 volts, inv_err is at 2 volts and barancer_err is at 0 volts.

    I have tried running the tv without t-con board, but it does the same. Do you have any ideas where to look? I was wondering is the power board broken or just some protection system that doesnt allow the high voltage line to come up.
    Attached Files
  • jpalmeida
    Member
    • May 2008
    • 11

    #2
    Re: Sony Bravia KDL-46W5500 no picture or sound

    Hi!
    I have the same problem, did you solve your bravia problem?
    Regards.
    Joao Pedro

    Comment

    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA

      #3
      Re: Sony Bravia KDL-46W5500 no picture or sound

      https://www.youtube.com/watch?v=8oZnSleucJ0
      13-code, same idea.
      Last edited by budm; 08-15-2015, 10:30 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

      • petttu
        Member
        • May 2013
        • 10
        • finland

        #4
        Re: Sony Bravia KDL-46W5500 no picture or sound

        jpalmeida; well no, nothing new. I am focusing to the power board next

        budm: thats not the solution, because the inverter/balancer board has no voltage in the high voltage section

        Comment

        • snme
          Member
          • Feb 2016
          • 26
          • AU

          #5
          Re: Sony Bravia KDL-46W5500 no picture or sound

          Originally posted by petttu
          jpalmeida; well no, nothing new. I am focusing to the power board next
          If you're not yet sorted, this thread might be be helpful.
          https://www.badcaps.net/forum/showthread.php?t=29820

          Comment

          Related Topics

          Collapse

          • KYBOSH
            Trying to Save - SONY BRAVIA KD-75X780F - No Picture BUT there’s sound
            by KYBOSH
            Previous owner said TV just went blank one day.
            They attempted to open the back panel and yanked the power connector off the power supply in the meantime.
            Easily fixed that and got the TV to turn on. Backlights come one with everything connected. Good Sign.
            The mainboard shows signs of life (red light on digital audio out is on) but that's about it. Good Sign.
            There is not blinking LED and the most importantly there is LED response and sound when I press the MENU button on remote control. GREAT Sign.

            I just downloaded the Sony KD-75X7800F Service Manual and...
            11-19-2024, 10:12 AM
          • x_orange90_x
            Sony Bravia KD-50X690E NO SOUND
            by x_orange90_x
            Finally got my KD-50X690E up and running after replacing the power supply. Upon testing it I noticed the lack of sound from the speakers. At first I just ignored it thinking it was set to external speakers or some other kind of audio setting. However, after actually going into settings and looking around I see nothing of this sort. I looked it up on Google and apparently a lot of people have disappearing audio on a variety of Sony TVs 🙄. I'm going to see if a firmware or software update will resolve it, if available.

            Has anyone else had this happen to their tv?
            10-05-2024, 05:01 AM
          • 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
          • ryandesign
            Sony Bravia KDL-40v4100 has no picture but has power, backlight, and sound
            by ryandesign
            Hello! I would like to repair my father's Sony Bravia KDL-40v4100 LCD TV. It was in perfect working order the last time I used it before the pandemic. Then it sat plugged in but unused for a year or more. And now everything still works except that there is no picture on the screen. A relay can be heard to click when the power cable is connected. When the power button is pressed there is a green power LED and then the backlight turns on. If I connect an HDMI cable and play something with audio I can hear it through the speakers. The remote control buttons are recognized. There is just never anything...
            05-30-2021, 01:07 PM
          • justin35
            Sony bravia kdl-43w755c - boot loop
            by justin35
            Hello,
            i have this sony bravia kdl-43w755c which boot loops. After sony logo, it shows the android animation loading then it restarts…
            from what i read online it looks to be an emmc issue…
            i’m not familiar with this kind of tv repairs… i’m repairing laptops and gpu’s…
            i took out the board and say an samsung 16gb emmc
            i don’t have an exact replacement, but i have a few 32 and 64gb emms’s from laptops…
            i could try to put one instead of the 16gb one, but will it work?
            where do i get the software from?
            any help will be much appreciated!...
            03-06-2024, 12:26 PM
          • Loading...
          • No more items.
          Working...