1. Deant

    OP Deant Member
    Newcomer

    Joined:
    Oct 15, 2019
    Messages:
    14
    Country:
    Australia
    Hi. Any help please. Brought a Switch that had bent pins in the usb-c. Replaced the port and still will not turn on. The M92t36 chip gets warm. The BQ24193 chip is quite hot. Console will not turn on. Tried and battery with charge and won't power on either.

    Any ideas would be greatly appreciated.
     
  2. Pintglass

    Pintglass GBAtemp Regular
    Member

    Joined:
    Jan 28, 2019
    Messages:
    233
    Country:
    United Kingdom
    Test to make sure you have voltage on the fuse above the usb port, test both sides referenced to ground.

    check you have a voltage on pin 9 of M92T36 and check the 3v3 rail for a short to ground, the cap connected to pin 6 of M92T36 is on the 3v3 rail so test that.
     
    Last edited: Nov 15, 2019
    FXDX likes this.
  3. Deant

    OP Deant Member
    Newcomer

    Joined:
    Oct 15, 2019
    Messages:
    14
    Country:
    Australia
    Thank You so much for the info. Which do you mean on the M92t36 ?. Could it be the hidden pins on USB-C port aren't connected properly ?

    — Posts automatically merged - Please don't double post! —

    Voltage to the fuse 2.26v and same the other side using original nintendo charger
     

    Attached Files:

  4. Pintglass

    Pintglass GBAtemp Regular
    Member

    Joined:
    Jan 28, 2019
    Messages:
    233
    Country:
    United Kingdom
    I mean to test pin 6 of M92T36 for a short to ground or test the cap that’s on that rail
    If your unsure which cap test all 3 around pins 4-9, set multimeter to continuity mode and if it beeps on both sides of a capacitor you probably have a short to ground somewhere, possible the pi3usb ic on the other side of the board could be at fault.
    None of this explains why you only have 2.6v on vbus though post an image of where your getting this from
     
    Last edited: Nov 15, 2019
    FXDX likes this.
  5. Deant

    OP Deant Member
    Newcomer

    Joined:
    Oct 15, 2019
    Messages:
    14
    Country:
    Australia
    Ok thanks will check it out tomorrow. Was thinking it might be pi3usb. 2.26v was on the use near usb port. Can't work out why
     
  6. Deant

    OP Deant Member
    Newcomer

    Joined:
    Oct 15, 2019
    Messages:
    14
    Country:
    Australia
    Only 1 shorting out is the 1 circled. I take it that is pin#6. So would this mean the PI3usb needs replacing. Or could it be the new usb-c shorting it out.
    Thanks for you help

    — Posts automatically merged - Please don't double post! —

    Getting 2.45v on the fuse
     

    Attached Files:

  7. Pintglass

    Pintglass GBAtemp Regular
    Member

    Joined:
    Jan 28, 2019
    Messages:
    233
    Country:
    United Kingdom
    It doesn't automatically mean that the pi3usb ic is faulty, but a lot of the time when the usb-c connector has suffered damage the pi3usb ic tends to fail because the majority of the usb-c data lines are connected to the pi3usb ic.

    Have you removed the mainboard from the housing if not you will need to do so, then test all the common mode chokes just below the pi3usb for continuity as this is another indication that one of the datalines has been subjected to vbus voltage if one of the chokes has failed open.

    A badly soldered usb-c connector will not be the cause of the short to ground on the 3v3 rail, but you could check that you don't have continuity from any of the data lines ie TX RX and sbu to vbus.
     
    Last edited: Nov 16, 2019
    FXDX and DrLivingstoned like this.
  8. Deant

    OP Deant Member
    Newcomer

    Joined:
    Oct 15, 2019
    Messages:
    14
    Country:
    Australia
    I took the USB-C port off to see if that solved the short. The port was soldered correctly. The short on the cap still remains. I have removed the motherboard. I have fixed heaps of PS4s so it basically the same as the HDMI ports on them. I will check the chokes (filters) for any earths and if there's none I presume the the pi3usb will need replace.
    Thanks again mate for your help

    — Posts automatically merged - Please don't double post! —

    Chokes all have continuatey. So must be chip
     
  9. Pintglass

    Pintglass GBAtemp Regular
    Member

    Joined:
    Jan 28, 2019
    Messages:
    233
    Country:
    United Kingdom
    Try removing the pi3usb ic to see if it removes the short to ground
     
    FXDX likes this.
  10. Deant

    OP Deant Member
    Newcomer

    Joined:
    Oct 15, 2019
    Messages:
    14
    Country:
    Australia
    Yeah will do. Thanks again
     
  11. Deant

    OP Deant Member
    Newcomer

    Joined:
    Oct 15, 2019
    Messages:
    14
    Country:
    Australia
    Removed PI3USB and short has gone. So must be faulty chip. Ordered one and hopefully will fix the problem. Thank you PintGlass
     
    FXDX likes this.
Draft saved Draft deleted
Loading...

Hide similar threads Similar threads with keywords - Replace, turning, Switch