Acer work on battery only

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • mnciks11
    Badcaps Veteran
    • Aug 2019
    • 345
    • south Africa
    #1

    Acer work on battery only

    Guys please help me with the following:

    Acer aspire 5742
    Compal la-6582P

    Work on battery only, if you plug the charge it doesn't charge, it doesn't power on with the charger.

    Here are photos along with the schematic
    Attached Files
    Tags: None
    • mnciks11
      Badcaps Veteran
      • Aug 2019
      • 345
      • south Africa
      #2
      Re: Acer work on battery only

      I have 19v on the first mosfet, on the second mosfet i have 19v on the source and 2.5v on the output which is totally wrong, the gate of the second mosfet is showing the same volt as the source which is 19v, this is a p-channel, the gate should be 9v or less...kindly assist guys

        Comment

        • Techtiger
          Badcaps Legend
          • Oct 2014
          • 1601
          • france
          #3
          Re: Acer work on battery only

          Check PACIN 3.3V what Voltage you get Drain PQ59B
          Last edited by Techtiger; 01-24-2020, 09:21 AM.

            Comment

            • mnciks11
              Badcaps Veteran
              • Aug 2019
              • 345
              • south Africa
              #4
              Re: Acer work on battery only

              I have 0v on PACIN

              I have 18v on Drain on PQ59B, and 0v on the gate of it

                Comment

                • Techtiger
                  Badcaps Legend
                  • Oct 2014
                  • 1601
                  • france
                  #5
                  Re: Acer work on battery only

                  Originally posted by mnciks11
                  I have 0v on PACIN

                  I have 18v on Drain on PQ59B, and 0v on the gate of it
                  There are two easy ways to get through the way out , first one is reverse engineering Second his understanding the components think little bit I will give you the answer later

                    Comment

                    • piernov
                      Super Moderator
                      • Jan 2016
                      • 4435
                      • France
                      #6
                      Re: Acer work on battery only

                      Cheeck if 1st DC-in MOSFET is shorted.
                      OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                        Comment

                        • mnciks11
                          Badcaps Veteran
                          • Aug 2019
                          • 345
                          • south Africa
                          #7
                          Re: Acer work on battery only

                          Originally posted by piernov
                          Cheeck if 1st DC-in MOSFET is shorted.
                          No the first mosfet is not shorted, there is no short, i even injected 19v with a power supply but still no short

                          Originally posted by techtiger
                          There are two easy ways to get through the way out , first one is reverse engineering Second his understanding the components think little bit I will give you the answer later
                          Lol please man what the way forward, i tried to jump the second mosfet on the dc in line using a wire, and yes i was getting 19v all over the board but still not turning on...only turn on when battery connected,

                          What exactly is pulling 19v to be 2.5v on the output of the second dc in mosfet?

                          Originally posted by techtiger
                          There are two easy ways to get through the way out , first one is reverse engineering Second his understanding the components think little bit I will give you the answer later
                          Lol please please give me a hint then or a straight answer I've tried
                          Last edited by piernov; 01-25-2020, 05:33 AM. Reason: quadruple post

                            Comment

                            • Techtiger
                              Badcaps Legend
                              • Oct 2014
                              • 1601
                              • france
                              #8
                              Re: Acer work on battery only

                              1st makes sure 2Fets are not short after trace back PACIN pic i have send is a Beautiful Circuit made by Compel your charger IC pin15 VDDP helps to create PACIN & ACIN
                              Attached Files

                                Comment

                                Previous template Next

                                Related Topics

                                Collapse
                                • survivalbloke
                                  Acer Predator Helios 300 - will not power up if battery is CONNECTED
                                  by survivalbloke
                                  This was a no power initially. Thanks to your help, I discovered it was the first mosfet, so I replaced. Now, the device will power up only if the battery is NOT connected. As soon as I connect the battery, it shuts off. If I connected the battery while the device is off, it simply will not respond to the power button. I replaced the battery, and while I suppose the new battery could be faulty, I'm assuming it is not. I'm having the same behavior with the new battery. I measure .2v at the charging coil. Manually applying power to the + and - at the battery header, there is no charging happening....
                                  06-25-2025, 12:20 PM
                                • dhs6512
                                  Lenovo Legion 5 15ARH05H, NM-D281 Rev: 1.0 not work with the battery
                                  by dhs6512
                                  Hello. Lenovo Legion 5 15ARH05H, NM-D281 Rev: 1.0 board
                                  Initially dead. Inspection: the board was not touched, on EC IT8227E-192 2101-CXA there is a mini-burnout.
                                  Replaced with the same one, flashed the EC with the official firmware (had to solder to the pins), left the main firmware (Gigadevice 25LB128DSIG) original.
                                  When connecting the charger, the device started, gave picture and works, checked all the functions - ok.
                                  Connected the original battery. Only on the battery the device starts for a second, lights up the keyboard backlight and turns off.
                                  When connecting...
                                  10-29-2024, 11:04 AM
                                • ahmarzo
                                  Acer TMX314-51 laptop battery problem
                                  by ahmarzo
                                  I have acer laptop tmx314-51 with part no 6050A3020501.
                                  The laptop is working fine on adapter and battery is also charging and when adapter is disconnected in on state the laptop gives backup on battery and gives good backup.
                                  But when laptop is powered on through battery only the laptop does not power on and there is 0 voltage on battery connector.
                                  I have not not tried another battery as it is not available locally could this be a battery problem.have checked discharging mosfet and there is no shorting to ground on any pin of battery connector.
                                  The schematic is not available...
                                  04-11-2025, 09:14 AM
                                • pabloroggeri
                                  Lenovo V310-15ISK - It doesn't work after changing the battery
                                  by pabloroggeri
                                  Good guys. I changed the battery to a Lenovo V310-15ISK.

                                  The laptop worked perfectly, I changed the L15C4A02 battery because it didn't last very long.
                                  When I connected the new battery, the charging LED stopped lighting up and the one next to the charging pin also did not react when I pressed the power button. Minutes before changing the battery it worked perfectly and stopped working after putting the new one in. Even if you put the oroginal battery in or connect it without the battery, no LED lights up when you press the power button nor does it give an image, nor does the...
                                  08-23-2024, 12:01 PM
                                • techfreak9356
                                  Vostro 3400 (LA-K033P) won't charge battery, everything else ok
                                  by techfreak9356
                                  I bought a Vostro 3400 motherboard (LA-K033P) to upgrade over my damaged Inspiron 5593 (LA-J091P) board. Everything else is ok except for the battery. This battery I am using now is already a replacement one since I disposed of the bloated original one. Back in the Inspiron 5593 motherboard, the battery charges fine and is identified just fine. However, with the upgraded motherboard, suddenly the replacement battery is labeled as "Not a dell battery". When I borrow a similar battery from my colleague (which did not have replacements yet), it is identified and charges just fine.
                                  ...
                                  09-14-2023, 11:10 PM
                                • Loading...
                                • No more items.
                                Working...