Fixed - Bad contact on board interconnects.

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • dumpystig
    Badcaps Veteran
    • Jul 2011
    • 485
    • UK

    #1

    Fixed - Bad contact on board interconnects.

    I had an intermittent fault on a Sanyo LCD TV, with Vestel PSU and Signal board. Inverter/backlights would power up for a split second then turn off - TV would then go into fault mode with the dreaded flashing LED. After much head scratching and fault finding I had one more idea - it was a last resort and it worked a treat.

    On the interconnect between the PSU and Signal board I removed the female receptacle from within the moulded sockets at each end of the wiring for the BL-ON wire (I did this on all the wires, but this particular one was the solution for me). This was fiddly as f*ck but once removed I then used a sewing needle to push the inner clip of the brass receptacle so it would have a more positive grip on the corresponding pin within the plug on the board at each end. Once reconnected and powered up my set now works as it should. Been running it for 9 days now with no probs whatsoever. Like I said, it's a very fiddly task but in my case it's been well worth it.
    System: HP xw6600 Workstation, 650W PSU | 2x Intel Xeon Quad E5440 @2.83GHz | 8x 1GB FB-DDR2 @ 667MHz | Kingston/Intel X25-M 160GB SSD | 2x 1TB Spinpoint F3, RAID0 | 1x 1TB Spinpoint F3, backup | ATI FireGL V7700 512MB | Sony Optiarc DVD +/-RW | Win 7 Ultimate x64 | 2x Dell UltraSharp U2410f | Dell E248WFP
  • dumpystig
    Badcaps Veteran
    • Jul 2011
    • 485
    • UK

    #2
    Re: Fixed - Bad contact on board interconnects.

    If anyone wants to try this but is unsure of how to go about it I can post a more detailed how-to.
    System: HP xw6600 Workstation, 650W PSU | 2x Intel Xeon Quad E5440 @2.83GHz | 8x 1GB FB-DDR2 @ 667MHz | Kingston/Intel X25-M 160GB SSD | 2x 1TB Spinpoint F3, RAID0 | 1x 1TB Spinpoint F3, backup | ATI FireGL V7700 512MB | Sony Optiarc DVD +/-RW | Win 7 Ultimate x64 | 2x Dell UltraSharp U2410f | Dell E248WFP

    Comment

    • r_jcrum
      New Member
      • Sep 2011
      • 5

      #3
      Re: Fixed - Bad contact on board interconnects.

      Would this possibly work for a plasma sanyo also? The problem you described sounds like my issue. Can you post some pictures? Thanks.

      Comment

      Related Topics

      Collapse

      • 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
      • 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...
        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
      • Hakuu
        LG OLED77G1PUA - No Video / Audio after a TCON Board change and Software Update
        by Hakuu
        Hi There,

        This TV was auto switching off after few seconds with some vertical lines on the screen, so got a new TCON board and replaced it.

        After replacing the TCON board it was working fine and i set it up with everything, used for few hours, then had the bright idea to update the software on it. During the update process, TV switched off and now no audio or video. No relay switch sound.

        More Details

        TV Model - LG OLED77G1PUA

        Got the same exact TCON board from TVPartsToday and replaced it. But didnt transfer the EPPROM data (didnt...
        07-12-2023, 02:37 PM
      • jb_Bak
        Sony xbr-65x900c main board issues?
        by jb_Bak
        Hey guys great forum glad to have found it. I bought a Sony XBR 65X900C cheaply because it didn't work. No signs of life at all not even a light/led. All I hear is a brief high voltage sound when I throw the power to it.

        Didn't see any obvious signs of damage so right away started checking voltages. This is what I see:
        Power Board Connector that goes to Main board
        CN6401
        Pin 01 NC
        Pin 02 NC
        Pin 03 "BL_ON": 0V
        Pin 04 "N/C"
        Pin 05 "STBY 3.3V": 3.5V
        Pin 06 "GND": N/C
        Pin 07 "AC_OFF"...
        09-27-2021, 04:52 PM
      • Loading...
      • No more items.
      Working...