Hardware USB C pin nr 5. has got only 3 volts - switch won't turn on

[seidolino]

Hey guys,

I've got a switch which only has 3 volts on the "usb power delivery communication" pin (nr. 5 - please see images) when the original nintendo power adapter is attached. All other pins have got 0V. So I guess there is a short somewhere on the board, right? Has anyone experienced such an issue? I already removed the P13USB IC, the M92T36 IC and the BQ24193 IC but there are still 2,93V on pin number five. I compared it with a healthy board, there should be 0V on pin nr 5 and ~14V on pins 4 and 9when the power adapter is attached.

Thanks for your help!

 

[MaxToTheMax]

Do you know if it had been connected to a 3rd party dock? Read a thread a (very) long time ago that said the voltage dropped on the same pin after a brick.

 

[seidolino]

phu, I don't know if it has been connected to a 3rd party dock, but I was using only the original one. So do you maybe know what's causing that issue, or which part on the mainboard?

 

[Pintglass]

Have you put a new M92T36 back on?

 

[seidolino]

As far as I remember I put a new one back on, yes but that didn't changed the behavior. Should it?

 

[MaxToTheMax]

phu, I don't know if it has been connected to a 3rd party dock, but I was using only the original one. So do you maybe know what's causing that issue, or which part on the mainboard?

Maybe a thunder strike or something? I think you are SOL if you have replaced the M92T36 and nothing happened...

 

[seidolino]

ok, I reinstalled (used new IC's) the M92T36, the BQ24193 and the P13USB now I get these values on the pads of the usb port in diode mode. can anybody tell me where the wrong (red) .OL pads are going to? I thinks it's just a broken cap or something. thanks!