lenovo g50-45 charger not dictect

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • akande
    Badcaps Veteran
    • Dec 2017
    • 278
    • Nigeria
    #1

    lenovo g50-45 charger not dictect

    i hav lenovo g5045 which doesnt charge when plug in adapter pc cannot power , but work fine with charged battery.
    Little check done no luck---- pPU4 vin0v,adect 0v , acok 5v,vcc 19v, i change PU4 NO LUCK . i need assistance plz
    Tags: None
    • Techtiger
      Badcaps Legend
      • Oct 2014
      • 1602
      • france
      #2
      Re: lenovo g50-45 charger not dictect

      check Voltage
      PQ6 pin (5.6.7.8) (4) (1.2.3) after with out all power test with multimeter diode mode Source Drain Gate
      PQ7 pin (1.2.3) (4) (5.6.7.8) after with out all power test with multimeter diode mode Source Drain Gate
      check Voltage PQ30B pin 5 and 3
      check Voltage PQ29B pin 5 and 3
      remove the jumper PJ2 test restence to GND bouth sides of the Jumper

        Comment

        Previous template Next

        Related Topics

        Collapse
        • motormayhem
          Lenovo T460 Only Charges on One Charger
          by motormayhem
          Laptop Question
          Hello,
          I'm working on a Lenovo T460 that has been having trouble charging as of late. Its worked well since I've owned it for a few years. When I went to use it the other day it was dead and wouldn't turn on (was sitting on an Anker 65W GaN charger). After some fiddling with the charger I got it to turn on and start charging, but seemed like the charger was not working as it should (took a few plug and unplug cycles to get it to start charging).

          A day later it was dead again and wouldn't boot/charge no matter what I did. No lights or anything when...
          05-12-2023, 01:46 PM
        • flat-earther
          ASUS X54H laptop thinks it's always charging even with charger unplugged
          by flat-earther
          The charging indicator light on my ASUS X54H laptop is always on even when the charger is disconnected.

          Windows also shows ''Plugged in'' when charger is not connected.

          This problem started year ago gradually, when unplugging the charger the charging light took several seconds to disappear, then minutes, and now almost always on even when unplugged for an entire day.
          Strangely, before sometimes immediately when plugging in the charger the charging light went away, and later came back with it connected.
          If I let battery run out and say it has 3% Windows will...
          06-24-2025, 09:32 AM
        • Mita99
          Lenovo Thinkpad P72 EP720 NM-B723 MB - Power disabled within 2 seconds after plugging the charger
          by Mita99
          Hi,

          Try to repair a Thinkpad P72 EP720 NM-B723 MB with I7-8850H processor and N18E-Q1-KB-A1 (P3200) GPU with 6GB memory. Unfortunately there is noinfo what happened to the laptop. I got it disassembled with parts missing, like keyboard, battery.

          Unfortunately I have no schematic available for me (requested in the sub porum) but got the boardview file.

          Symptom: after connecting to the charger the power led light up for one-two second and switch off. After a couple secons the power led light up for half a second and switch off. No battery, no IO board, no...
          04-27-2025, 07:20 PM
        • totto210
          lenovo legion 5 15-lmh05 nm-c911 charger problems
          by totto210
          Hi guys, well the summary is this:
          the equipment arrived because it did not turn on (it had been the original 230w source the problem) then I feed with my regulated source and without wanting to invert the poles. the equipment turned on and turned off.
          This damaged the charger and its mosfets both high and low switching.
          It also damaged the input mosfet (pq102).
          by chance i had another lenovo legion just like this one and i removed the components and tried to turn it on and it turned on but ....... it burned again the high and low mosfets and switch (pq104, pq105, pq103)....
          05-23-2024, 10:03 AM
        • Document Archive
          Lenovo 3000 Series Schematic
          by Document Archive
          Lenovo 3000 Series Schematic

          Lenovo 3000 was a line of low-priced notebook and desktop computers designed by Lenovo Group targeting small businesses and individuals. It was replaced with the IdeaCentre and IdeaPad brands.

          3000 C100 laptop with Braille keyboard
          Lenovo 3000 C
          C100, C200 - 15-inch XGA screen
          Lenovo 3000 N
          N100, N200 - 14.1-inch- and 15.4-inch- WXGA models
          N500 - 15.4 inch screen.
          Lenovo 3000 V
          V100, V200 - 12.1-inch WXGA models
          Lenovo 3000 G
          G400, G410, G430, G450, G455, G510, G530, G550, and G560...
          10-04-2024, 06:05 AM
        • Loading...
        • No more items.
        Working...