Visio E550VL Main Board Schematic Help

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • CAlofs
    New Member
    • Aug 2016
    • 3
    • USA
    #1

    Visio E550VL Main Board Schematic Help

    Does anyone know where I can find a schematic for the 3655-0152-0150 board? I found a 1 ohm short to ground on the node associated with CE11,
    U3 and U4. I have eliminated all those parts but I assume the node continues on an internal layer. I can drive the node with a fixed current and check for temperature rise if I know where to look. Thanks!
    Tags: None
    • CAlofs
      New Member
      • Aug 2016
      • 3
      • USA
      #2
      Re: Visio E550VL Main Board Schematic Help

      Update: I never found a schematic so I went ahead with the temp check. First, I used 2 Watts to locate the general board area. Then, I went to 4 Watts and identified U26 (P13HDMI245-AZLE) as the shorted part. While searching for a replacement, I read a previous bad caps post describing how difficult it is to replace the part without damaging traces. I don't know what to do next, but at least I know what the problem is. Any ideas?

        Comment

        Previous template Next

        Related Topics

        Collapse
        • Dani_2024
          Sceptre U550CV-UMR 4K LED, Bad Caps on Main Power Board?
          by Dani_2024
          Hi and thanks in advance for any input you might provide!
          I have a Sceptre U550CV-UMRD8POTV83BB 4K LED (this is a dumb tv) that I bought new in August 2021, so It's just completed 3 years.
          Main power board model: TP.MS3683.PC821 T-Con board: N4TP546UHDPU2L_BO

          Last Sunday I was watching a dvd and fell asleep for about half hour, when I awoke the tv screen was black and couldn't get the dvd menu to show, so I changed the input to antenna and had sound but no picture, turned it off. I then got online and found this great site! ....read many troubleshooting tips and this...
          5 Photos
          10-28-2024, 05:06 PM
        • ygorsan
          LG 55NANO77SRA TV ā€“ Menu scrolling by itself even after removing button board (Main Board EBU66792103)
          by ygorsan
          Hi everyone,




          Iā€™m looking for help with a persistent issue on an LG TV model 55NANO77SRA, which uses the main board EBU66792103 (also used in LG UQ80 and NANO75/NANO80 series).







          šŸ§© Problem Summary:
          • The TV keeps scrolling through the menu or selecting items by itself.
          • I removed the physical button board (the entire panel with power and volume buttons) and also disconnected the flat cable (CN202) from the main board.
          • The remote control is not in use (batteries removed), and the TV still shows the same behavior.
          • I
          ...
          07-28-2025, 08:34 AM
        • 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
        • JDC
          (SOLVED) - ONN 100012588 No Power, Then Rebooting After Main Board Change
          by JDC
          ONN 100012588
          Issue: No Power, Then Rebooting After Main Board Change

          Short answer: replace main board and power board
          Technical answer: replace main board and Q306 & Q307 on power board.

          Long answer:

          TV wouldn't turn on. Power switch was fine which means the main board isn't processing the power on signal. Replaced main board. TV turns on now but randomly reboots. Bad main board? EEPROM? Tried to pull main board and got a shock touching the corner of the board. That's weird. C334 (450V 10uf) capacitor is still holding a high charge....
          07-15-2022, 07:39 AM
        • 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
        • Loading...
        • No more items.
        Working...