Fading picture on Sony 48-WD 655 TV

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Piotr4509
    Piotrek
    • Apr 2023
    • 2
    • Polska
    #1

    Fading picture on Sony 48-WD 655 TV

    Hello everyone on the forum. Electronics is my hobby, so please be understanding. I got a Sony KDL-48WD655 TV for free, which did not turn on at all from the remote control or the "on" button, after a long search for the diagram, I reached this forum where I found a diagram and a similar case with a person from the forum. Using the hints from one thread, I started the TV by bridging the TPC 8129 source with a 10k ohm resistor. The tv turns on and off, the "+" and "-" buttons aloud also function, which is broken in this section I would like to address later because there is another problem. After a few attempts to turn it on and off, an image appeared that at first was not there at all, but appears for a moment and then slowly begins to fade. All board voltages are 1.2V. 1.8V. 3.3V. 5V. 12V and 20V. 12V is applied to the matrix. I haven't disassembled the matrix yet, but I will in my free time. Please let me know what could be the reason for this behavior and if it makes sense to deal with tv at all. I wanted to hang the TV in the gazebo because it is large and energy-saving. I am attaching a clear photo the TV starting up.
    Attached Files
    Tags: None
    Previous template Next

    Related Topics

    Collapse
    • mrsith
      Sony KDL-65W855C mirrored, fading picture
      by mrsith
      Hi, me again.

      Grabbed that Sony with 6 blinking lights. Easy job, especially that I had LED set. Replaced them, upon reinstalling everything and doing test I was shocked. The picture is upside down and mirrored. There is some fading effect on one side (4th TV in a row with backlight problem that turned out to have this issue as well...), and there are 2 black vertical bars. Touching side and bottom tabs doesn't produce any change at all.
      The LEDs were taken from kdl-x857c, basicay same model. I transferred screen to its chassis to save time, but just in case of any incompatibility...
      08-19-2022, 03:42 AM
    • CyberPhoenix
      Issue with picture quality of Sony bravia TV
      by CyberPhoenix
      Hello, Last week I bought the 50" Sony X80j tv everything was working fine, untill I plugged the tv in a ups power supply 650va the tv remote control became unresponsive and the TV became laggy after a while the picture quality isn't the same as before the tv seems less brighter and the picture is somehow blurry, people's faces don't look as natural as before, there is a mini orange-pink tint to the edge of people's faces especially in NETFLIX Dolby Vision like in One Piece ep1 Alvida skin tone, my intention was to protect the tv but something went wrong I checked the ups with a multimeter,...
      Badcaps Electronics Repair Forum & Schematic Search - Badcaps
      https://www.badcaps.net
      01-22-2024, 02:08 AM
    • noisykid
      Sony XBR-85X950G Gray horizontal lines and vertical picture shift diagnosis?
      by noisykid
      5.5 year old 85 inch Sony Bravia X950G started showing gray horizontal lines across the bottom of the screen and the picture shifts slightly vertically when it happens. The lines sometimes get bigger/smaller vertically and bounce back. See the video for the problem. It seems to be happening after it warms up after an hour or so. Happens regardless of source. Right now there's nothing but power cable connected and it's happening. We did hook up a new Nintendo Switch to our HDMI switching receiver today, and played for a while with no issues, but this problem didn't occur til a few hours later while...
      12-30-2024, 07:15 PM
    • tree5656
      diagnosing sony XBR-75X900H. NO PICTURE
      by tree5656
      This tv is not even 3 years old. its a sony XBR-75X900H, it was like a flashbang went off suddenly, tv faded to black and no picture. backlight is on. tried to do the power cycle, factory reset. i get beeps from remote if i tap up/down but no picture. how can i determine if its the panel or a board? i have replaced boards before im just not sure what the issue is here. sony said nothing they can do and only suggested to find a local repair shop. please guide me here
      11-09-2023, 04:55 PM
    • DKWS89
      Sony XBR 49x900E - Sound and backlight on but no picture
      by DKWS89
      Hey Guys,

      So a few months ago my Sony XBR 49x900e TV screen stopped displaying the picture but the backlight comes on and I still get sound when I use the remote and navigate to certain apps. I haven't checked anything with the meter yet but started with ordering some replacement boards. I've tried replacing the BMKS board (used from ebay) and also completed the firmware upgrade based on Nicks TV repairs youtube video. I've also replaced the TCON (twice) and PIB.

      All of these changes have resulted in the same issue with no picture. I've also tried disconnecting the ribbons...
      12-14-2023, 04:30 PM
    • Loading...
    • No more items.
    Working...