Nintendo Switch , NO POWER, already checked for M92T36, shorts under CPU

in some parts, i could see a bridge, can you confirm it @Severence @Insomniac ?

Yeah, some of them look like they could be. Looks like you may have gone round it with the soldering iron but the solder didnt get hot enough? I would probably give it a re-flow (without taking it off) while putting some pressure on it with tweezers.

already done it, i will do it again, and go around it after the reflow with my soldering iron.

I think it may be the soldering after the fact which has caused your problems or possibly attempting to nudge or push down the IC during reflow, I would personally add flux and just reflow, donā€™t touch the IC and once the IC has cooled slightly but while itā€™s still warm clean the board the same way you did above :slight_smile: as I notice a lot of people using underpowered soldering irons which simply donā€™t have the thermal capacity, or alternatively you can hold your hot air in one hand at 150c in the vicinity at low air while going round with your iron in the other if itā€™s struggling which will help you achieve nice joints.

Just quick note though, if there was bridges prior or prior to your very first cleanup (the one which resolved your skewed rail readings elsewhere earlier) between the IC pins/pads then the M92 IC itself may be dead and may have to be replaced

hmm, letā€™s see what will happen

annnd, 0.00amps :frowning: im out of things to try, mabye buying another m92 would help

Maybe.

Photos following your reflow and cleanup might also be a good idea, try and get the angle steeper like Insomniacs ohotos

With battery and USB connected what voltage do you measure at either side of the USB fuse? (one probe on ground and the other on one side of the fuse, then same again but the otherside of the fuse)

i will now connect power+ battery, letā€™s see what happens

no luck, i will try to reflow again later.

As in no voltage?

Make sure your putting one probe on ground (screw hole pad) and the other on one side of the fuse, then repeat the other side of the fuse, if still nothing then the fuse is open or you have a bad USB port or the rail is somehow shorted to ground.

@Insomniac @Severence
oh shit 0.17 amps what happened

5v but hey, what the hell is happening???

heyyyy something is happening


stucks here

but im on macos, without a driver

also .0.37 amps with battery plugged in. (EMMC disconnected)

tegra heats up!! but when i do connect the emmc, the amps goes from .17 to 0.00

Maybe intermittent connection fuse to board which you disturbed when probing (?) or maybe bad USB/M92 so only good in one USB orientation/direction (?) or maybe bad battery connector/joints, hard to say

Sounds promising, though tbh I have never used that to inject payloads and have never done it on a mac either so donā€™t really know.

Your not connecting it while the board has battery and USB connected are you? if yes, donā€™t do that :slight_smile:

I would wait til you can verify with TegraRCMGUI on Windows and with the Hekate payload (if itā€™s unpatched) the integrity of the EMMC module, hopefully the person who reflowed the EMMC hasnā€™t screwed it up :open_mouth:

if it is screwed up what would i do?

with emmc connected, battery and usbc it draws 0.27 to 0.25 amps

Well as far as I remember your 1V8PDR was fine (which the EMMC has a connection to) I donā€™t recall if you checked your 3V3PDR resistance relative to ground or not? perhaps itā€™s shorted out (?)

Iā€™d just wait to see if you can get into Hekate and see if your can backup the EMMC from there

i am turning on my main windows rig