1. Winnppl

    OP Winnppl Member
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    Hi guys,

    i'm trying to repair a Nintendo switch. it wont display anything on the screen when pressing the power button. I tried re-seating all the ribbon cables and plugs, but still no luck. when I plug the switch with the AC adapter without the battery plugged in I get this sound () when I plug in the switch with the AC adapter WITH the battery plugged in it makes this noise like its trying to start up and power cycle () but nothing still happens. I purchased a multimeter that beeps when set to continuity and it should be coming in soon so I can check all the resistors and capacitors, but is this a common issue? I think the issue might be from the p13usb chip.

    Thanks!


    Edit: Ok after getting a new Mulitmeter I have found some capacitors that are shorting in these photos. where should I look next?
     

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    Last edited by Winnppl, May 8, 2020
  2. Patapon3321

    Patapon3321 Member
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    I dont think thats the P13USB, maybe the Realtek Sound IC or more worst the Nvidia Chip.
     
  3. Winnppl

    OP Winnppl Member
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    Thanks, yeah hopefully its not the Nvidia chip.. what is the chip name of the Realtek sound IC?
     
    Last edited by Winnppl, May 4, 2020
  4. Patapon3321

    Patapon3321 Member
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    the orange one
    [​IMG]
    Now I think this cant be the Realtek IC
     
  5. Winnppl

    OP Winnppl Member
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    You don't think its the Realtek IC causing the issue? I have a multimeter on the way, mine I have now does not beep for continuity, so ill check the resistors around the chip when it comes in.
     
  6. andres1234

    andres1234 Advanced Member
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    i think can be a capacitor smd in short i have a similar problem in the past and problem is A capacitor smd in short, not ic was a smd
     
  7. Winnppl

    OP Winnppl Member
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    Thanks for the response. i'm not sure where that is, but I want to learn. I will check it out when I get my multimeter.

    Thanks again!
     
  8. andres1234

    andres1234 Advanced Member
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    they look like this, check in youtube how test this pieces.
     

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  9. Winnppl

    OP Winnppl Member
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    Thank you for your help, I see those on my motherboard, what ones near what chip did you change out? that's the ones near the bq23193 chip.
     

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    • SMD.jpg
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  10. andres1234

    andres1234 Advanced Member
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    u have multitester now?
     
  11. Winnppl

    OP Winnppl Member
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    I have one, but not one that beeps when the capacitor has continuity. I have one on the way that does arriving in a few days.
     
  12. andres1234

    andres1234 Advanced Member
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    checks others, in the past y have short near BQ IC and the short was in other place.
     
  13. NaniMael

    NaniMael Newbie
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    same... motherboard not short.. ic bq & pusb & m93t change.. same
     
  14. Winnppl

    OP Winnppl Member
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    You are saying you changed out those chips but still having issues?
     
  15. NaniMael

    NaniMael Newbie
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    Yes. Symptoms remain the same after replacement.

    I haven't seen any examples of solving this problem.

    Chip I replaced m92t36, bq24183, p13usb

    It is clear that there is a problem elsewhere.
     
  16. bombob

    bombob Advanced Member
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    Check the caps under the SOC (back of the board,middle area) if you have shorts there, you mostly have a goner unfortunately
     
  17. NaniMael

    NaniMael Newbie
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    Is it resistance?

    What exactly is it?
     

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  18. bombob

    bombob Advanced Member
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    Yes this should be a small resistor. The capacitors are the brown ones

    Sent from my SM-N960U using Tapatalk
     
  19. NaniMael

    NaniMael Newbie
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    Short and value ohms?

    capacitors not short

    Only this resistance is short circuit.
     
  20. Pintglass

    Pintglass GBAtemp Fan
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    That resistor is low ohm’s or even 0 ohm’s not sure but it will buzz your multimeter if your using it to test for shorts.

    Check the big coil next to bq24193 if your getting humming
     
    KeoniAzugon likes this.
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