It5570 chip Ec_wrst voltage

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Rahul Morya
    Member
    • Feb 2024
    • 13
    • India

    #1

    It5570 chip Ec_wrst voltage

    While testing Dead hp 14s laptop i found charging section ok but no charge led indication.
    while testing voltage across IT5570 sio chip +3VPCU are ok
    but voltage at EC_WRST# is 0.56V what be problem i have attached schematics.
    is this capacitor C4708 faulty.
    Attached Files
  • renault12
    New Member
    • Sep 2013
    • 5
    • argentina

    #2
    Hello. I cut the wire marqued as EC_WRST between the node R4702-C4708 and Q4700/Q4701, like the draw, leaving only R4702 and C4708, and the line EC_WRST recovery 3,3V, LED charge white, and system run.

    Comment

    Related Topics

    Collapse

    • acedogblast
      Guide to transplant MEC1503 EC chip and EEPROM reprogamming for T14s gen 2 and X13 gen 2
      by acedogblast
      This is a guide that I am writing for helping others to replace their MEC1503 EC chip if it breaks (or to get around an inconvenient prompt to the BIOS). This forum has been extremely helpful to me so I would like to contribute to help others. I will tell you right now that this task is very difficult to do. You MUST have experience and tools to do precision micro-soldering, BGA reballing, trace repair, and general laptop repair skills.

      There are some specialty tools needed to do this task. The replacement MEC1503 chips can be acquired from Aliexpress. Do not buy the bare chips as...
      11-02-2024, 05:13 PM
    • Troystain
      Help EZP2023+ updated chip database for w25q256jveq?
      by Troystain
      Hello, anyone here have updated ezp2023+ chip database in .dat file format.

      I need to add w25q256jveq chip but I do not know what data should I type.

      I'm using the ezp chip dabase editor posted from here https://www.badcaps.net/forum/troubl...ro-programmers

      The currenty unit model that I am trying to detect is HP elitebook 640 g9 which is currently locked on admin bios....
      11-25-2024, 12:53 AM
    • sam_sam_sam
      A variable voltage/current 48V@10A switching power supply using a TL494CN ic chip
      by sam_sam_sam
      I decided to do a write up about this switching power supply because of the use of this regular ic chip

      Which I have seen some computer switching power supplies use this ic chip before I wondering if a circuit board of this layout could be used to modify a computer switching power supply using this ic chip...
      04-07-2024, 10:10 AM
    • inck243
      Acer e15-e5-576g-5762 bricked. Bios chip won't interface in AsProgrammer.
      by inck243
      Thanks for any help. The board version is DAZAARMB6E0 REV: E. The bios chip is winbond 25Q64JVSIQ1736. W25Q64JV is not available in AsProgrammer -- only BV CV FV or FW_1.8c. The chip won't interface with asProgrammer and a CH341A. When I have this chip on the board, the laptop will not post but when I plug it in to power, the blue LED lights up, also the orange when the battery is connected. When I push the power on button, keyboard backlight turns on and the fan starts briefely then turns off. But I can't do anything to program this bios chip so I bought another one.

      The BIOS...
      07-25-2024, 09:17 AM
    • Instafixx
      Macbook A2179 820-01958
      by Instafixx
      Hi,
      Have a Macbook A2179 with liquid damage. Customer showed it some shop which has done an ultrasonic cleaning of the board.
      The board pulls 0V but doesnt turn on. No Fan SPIN. NOT IN DFU.

      I checked the Power Sequences below and found this -


      Once a valid external power source (Charger or battery) is connected, the following rails will come online.
      PPBUS_G3H: Normal voltage is ~12.6v on the charger with the battery disconnected. Produced from the ISL9240 (U7000, which uses PPDCIN_G3H as its VIN.
      PP3v3_G3H_RTC: Normal voltage is ~3.3v. Produced...
      05-20-2023, 05:19 AM
    • Loading...
    • No more items.
    Working...