Philips 258B6QUEB/00 LCD monitor no power

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • peterzz2007
    Member
    • Nov 2021
    • 19
    • Slovakia

    #1

    Philips 258B6QUEB/00 LCD monitor no power

    Hello all,i`v got dead monitor,board model 715G8068-M0F-000-005I.
    There is 19V and 5V present on board where external power supply is connected,Enable and Dim signal is no present.
    I measured voltages and resistance on coils present on the main board,pls. take a look.
    Front LED just blinks for a split of the second when PS is connected.
    Attached Files
  • CapLeaker
    Leaking Member
    • Dec 2014
    • 8329
    • Canada

    #2
    Re: Philips 258B6QUEB/00 LCD monitor no power

    Its probably the main IC under the heat sink that’s the problem.

    Comment

    • peterzz2007
      Member
      • Nov 2021
      • 19
      • Slovakia

      #3
      Re: Philips 258B6QUEB/00 LCD monitor no power

      Hello,probably,resistance on coil leads to main ic is quite low.
      I don`t have working board to compare the values,maybe it is normal

      Comment

      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...
        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
      • mikey5791
        Philips 196V3L monitor power led off
        by mikey5791
        Hi, i was given this lcd monitor last week with the issue of power led blinking. Upon checking the power board, i found 2 pieces electrolytic caps bulged and replaced them.
        Later, when i switched on ac power and detected 5v and 15v dc at output pins. But as soon as i pressed on the front power button, the led on power button lights for 1 second and it turns off.

        So, i tried disconnect the flex ribbon cable from t con board. But all i got is a white screen with nothing on. I suspect there is something short somewhere that prevent the display being turned on. Can someone with...
        01-25-2024, 07:52 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
      • Loading...
      • No more items.
      Working...