kdl-46ex 727

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • abdekader
    Senior Member
    • Jul 2014
    • 73
    • Turkey
    #1

    kdl-46ex 727

    Hello my friends
    I have kdl-46ex 727 after 20 Min , the tv turn off then 2 error blinking
    the problem Main Power Over Voltage Protection . How i can solve it ?
    this is Power
    http://www.shopjimmy.com/sony-1-474-309-11-g5-board.htm
    Electronic Engineer from Syria,Aleppo
    Tags: None
    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
    • PantherDave
      Microsoft Surface Pro (5th gen) model 1796 - no power
      by PantherDave
      Hi all!

      I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. 😅

      I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
      https://www.badcaps.net/forum/troubl...-hardware-devi...
      05-29-2024, 02:01 PM
    • GLISIT
      Asus Probook P5440UF-XB74 power issue
      by GLISIT
      Hi all,

      TL;DR - this laptop is driving me nuts with the oddball power-related behaviors. Appreciate any insight you can provide!


      I'm experiencing a power issue on an Asus Probook P5440UF-XB74. Although I've worked with electronics and computers for decades, this is my first attempt at getting into motherboard-level component troubleshooting. Any help the community can provide is greatly appreciated!

      A few weeks ago I was using the laptop (on battery power) for a Zoom meeting. The battery was running very low (long meeting) but I wasn't worried about...
      01-16-2025, 02:29 PM
    • mkdj
      Acer TravelMate P214 - N19Q7 main power rail shorted to ground
      by mkdj
      Dear all,

      I have taken out the motherboard of a Acer TravelMate P214. There is a short to ground on the main power rail (19V). I don't have the schematics or boardview for this board (DAZ8IMB1AA0 REVA). But I have found 4 MOSFETS close to the main power rail : 2 N-Channel and 2 P-Channel.

      I have checked resistance across each of the 4 MOSFETS. I have the following readings:
      Both N-Channel Mosfets: nothing odd

      P-Channel MOSFET number 1:
      source - drain : 117 kOhm
      source - gate: 96 Ohm
      gate - drain: 117 kOhm

      P-Channel MOSFET...
      08-20-2025, 06:08 AM
    • 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
    • Loading...
    • No more items.
    Working...