HP 19" monitor LCD L1925 power problem

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • mijd
    New Member
    • Sep 2013
    • 7
    • Senegal
    #1

    HP 19" monitor LCD L1925 power problem

    Hello!

    I have a HP 19" monitor LCD L1925. It won't power on. after opened it I see there is a problem with the power module. one of the microship exploded as you can see on pictures (red circle). I can't fix it if I don't know the microship references because it exploded and I can't find the service manual of the device.

    Please I need your help !
    Attached Files
    Tags: None
    Previous template Next

    Related Topics

    Collapse
    • theone111
      Problem with LG Plasma 60PM6700 - Random power downs
      by theone111
      I have an LG Plasma TV 60PM6700 for the past ~12 years.

      In the last ~3-4 months I have been having some issues.
      1. Problem: It started with random picture disappearing (sound still worked).
        Frequency: Happened about once a week.
        Solution: Had to turn off TV wait a few seconds before turning it on again.
      2. Problem: Then it got worse and the TV started to shut down and when turning on the no picture just sound.
        Frequency: Happened about once a week.
        Solution: Had to turn off TV wait about 10-20 seconds and turn it on again to solve.
      3. Problem: TV shuts down
      ...
      1 Photo
      07-22-2024, 10:36 AM
    • Duranitron
      Asus x512dk rev 2.1 power on problem
      by Duranitron
      When I reflash again the bios of hoaca388 the unit powers on and the unit lives!!! Hooray!! All voltage in the coil 3.3v, 5v and 6.7v indicate charging are all present. including the cpu voltage , EEPROM and GPU voltage the unit is now alive, normal screen booting to windows and log in screen until I power it off. Then the unit never goes on even when pressing the power button in the keyboard.. Voltage reading 19v main , 3.3v VCC in IT8225E-128 and EEPROM VCC 0 volt and the charging voltage 0 volt.

      Try to trace the power switch button goin to the power switch IC PU8803 (APL3533AQBI-TRG)...
      11-26-2024, 10:22 PM
    • usbdevice
      Acer X223HQ (Version Bbd) on/off-power-cycling
      by usbdevice
      Hi all

      There's two other threads about this monitor with seemingly the same problem. The problem was resolved in one case by replacing the entire PSU board and in the second one by replacing an unknown IC.

      https://www.badcaps.net/forum/showthread.php?t=50657
      https://www.badcaps.net/forum/showthread.php?t=40512

      The first one has pictures of the pcbs and I noticed that there's one IC and assorted caps not populated on mine (but the PCB itself looks identical) so I thought that'd warrant a new thread.

      It's my dad's old monitor. He...
      08-05-2022, 02:21 AM
    • EazyBone
      LG OLED55C9PUA power problem
      by EazyBone
      Hello, trying to fix C9 55 inch. I have pulled the back and all looks completely normal with nothing burnt so far. This is first time attempting to fix a tv so any help is appreciated.

      Problem. I hit power button, red light on TV turns off and tries to turn on, no picture shows up and then shuts off. This occurred after house power turned on and off, not from a storm.

      I have tested the power going from power supply to main board, all 12v and 20 volt readings are proper when I hit power button.

      The power supply to t con is different story.
      This...
      06-23-2023, 07:43 AM
    • hikomalek
      SYMSI70 gas heater, TOP247Y exploded, power supply, snubber network
      by hikomalek
      Hello, I have a SYMSI70 gas heater board, which has issues with its primary side power supply, controlled by TOP247Y chip.
      When I replace a TOP247Y it explode in 1 second. I have desoldered transformer and measured a winding ratio, so transformer looks like OK.

      Transformer:

      |Info| Primary | Aux | AB | CD|
      |-|----------|----------|-|-|
      |Ratio|1|25|40|12|
      |Voltage AC|230V|9.2V|5.8V|19V|
      |Voltage DC (*1.41)|230V|13V|8.1V|27V|

      I have disabled a undervoltage protection of TOP247Y, disconnected secondaries and tried to power it up...
      09-19-2025, 03:30 AM
    • Loading...
    • No more items.
    Working...