Hardware Nintendo SWITCH REPLACED P13USB and mq92 chip still shorted???HELP

[driftkingisback]

Hey guys, i trying to fix a faulty nintendo switch,

first of all i changed the USB Port because was already damaged,

after i checked the caps, near the mq92 , was one shorted and on the back also one cap pics yellow marked was shorted, so first i replaced the video chip (p12USB) ,caps still shorted and

after replacemend the other chip mq92 the caps are still shorted, now i dont know what i have to do next.....

i took the cap away near mq92 away see but is still shorted..... marked quellow on the pic, took it away



here the pics, i marked the caps which still shored...normally after taking out the chips the short has to be gone....need your help, sorry my english isnt the best

 

[Oritoz]

Go to the TronicsFix Forum, you can get a lot of help there

 

[driftkingisback]

Maybe here they can help me, dont know where i have to start...normally after take one chip apart the problem has to be solved

 

[GrimDim]

Uhh I dont know, if the shorts are still there without the chips maybe they are caused by the SoC? Are there caps directly under it that are shorting as well?

 

[driftkingisback]

they are shorted under the caps too

 

[GrimDim]

No I mean are there caps under the SoC that are shorted?

 

[Jabba2k12ger]

unplug your emmc and look if the short is still there, sometimes a bad emmc causes this

 

[driftkingisback]

i took the emmc off and checked about the caps, but they are still shorted, damn what else i could do

 

[Pintglass]

What resistance to ground are you getting on the 3v3 rail?
If its a full short something may get hot when you apply power, see if you can feel anything.

 

[driftkingisback]

im not a profi, what should i expect? do you have any pics? would be nice

 

[Pintglass]

Test for resistance to ground on the big cap just above PI3USB

 

[Prolls]

I got the same problem on a motherboard and for me the short comes from the SoC.

Check the resistance value on the 2 capacitors I circle on the picture, there is huge chance that they will be shorted too. I tried removing the capacitors and injecting some voltage but nothing got hot on the board.

In one of his recent videos tronicsFix got the same issue, capacitor shorted even after removed PI3USB and he said that it is not fixable, check at 17:49

 

[driftkingisback]

thanks, they were also shorted took them away ...and still shorted

 

[Pintglass]

When the 3v3 rail has a short everything on it will show as shorted, try removing the 3v3 buck regulator next to the 2 caps you just removed or do as prolls said and inject 3.3v into the line to see if anything gets warm

 

[driftkingisback]

can you mark what is the 3v3 rail , sorry for asking

 

[andres1234]

try remove nand and check again

 

[CompSciOrBust]

try remove nand and check again

Removing the nand won't do anything if the cpu doesn't even boot

 

[andres1234]

Removing the nand won't do anything if the cpu doesn't even boot

yes but u can prove if short still or not

 

[seidolino]

sounds like it's the same issue I had (SoC broken) --> https://gbatemp.net/threads/multiple-shorted-caps-near-p13usp-m92t36-and-alc5639.562151/

 

[Alfixes]

I have same fault as you, no solution yet, following.