Hardware Help being pointed in the right direction on switch repairs

[jayswitch]

Right so I am new to switch repairs, I am a retired laptop technician so have a few tools tools at my disposal but I am after beginners advice please.
Please note I am not asking for a holding hand guiding me through everything basically getting others to fix my faults I am after a point in the right direction to source the information.

SO been watching a lot of youtube videos on switch repairs, read almost all of the threads on this forum on issues and some solutions.

I have two no power switches. One has a similar issue to anther thread so will leave that for now, this one however:
Checked usb c, looks perfect, gave pins a wiggle under a microscope all look firm. I first plugged into a laptop to check rcm, does not connect/recognise. Does not draw any amps/volts when plugged into the mains charger. Opened up and checked capacitors around the main 3 chips that get mentioned, p13, mt and the other (sorry forgot names) no chip seems to have any capacitors shorting out around them?

So I am asking I have read a few threads about checking certain volts coming in, certain test pads etc now where can i find the info that shows what reading I should be checking/getting. I would like to check there is power coming in and where it is going, that the chips are acting as they should, that the usb is all connected up fine and I think that is it for now.

Thanks for reading my long story, I am a big fan of this forum, a lot of very helpful people on here trying to give advice.

 

[AceX]

Could it be a dead battery?
Also, I like this site:
https://www.ifixit.com/Device/Nintendo_Switch
It has guides for all parts.

 

[Ace_]

From what I've seen no amps being drawn is a bad BQ24193, bad fuse (although I've yet to see this) or bad battery. You can have a dead cpu and the switch should still charge normally.

 

[jayswitch]

i have a working battery, so not that unfortunately

From what I've seen no amps being drawn is a bad BQ24193, bad fuse (although I've yet to see this) or bad battery. You can have a dead cpu and the switch should still charge normally.

Which fuse? this is the basics I would like to learn without having to keep asking.

.

 

[Ace_]

It's just above the usb-c port, it looks like a black resistor.

 

[FAST6191]

I don't know what you would have had in your laptop days but if it is anything like I am seeing for apple's junk with full signals level stuff you need a capture scope to usefully detect then I have not seen anything like that in consoles... probably ever if I don't count the Amiga and similar devices. Some older devices do slightly better and we have some sanded PCBs to look at, and some people have a few sub systems (mostly sound and graphics, maybe a test of test points to shove in an autofire) documented reasonably well or common caps to fail noted in a list but beyond that... you could probably advance the state of the scene dramatically by getting a working board and measuring the components on it (hope you have a nice ESR meter, or can be bothered to desolder things), and noting voltages at different power states.

Some people fired the parts cannon a few times so we have some fixes for bad docks and what have you that blow certain components a lot, most of which I imagine you have already seen, but again nothing resembling what I would expect in some kind of industrial setting, that I watch the likes of https://www.youtube.com/user/rossmanngroup/videos play with a lot or even something I would expect as a baseline 10 minute "worth repairing or not?" tester or "you just have to fit it and program it" mechanic. Even among those parts cannon fixes, and guides following from them, I would not give a good warranty if that was all I knew/did.

 

[Spawnaor1]

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Right so I am new to switch repairs, I am a retired laptop technician so have a few tools tools at my disposal but I am after beginners advice please.
Please note I am not asking for a holding hand guiding me through everything basically getting others to fix my faults I am after a point in the right direction to source the information.

SO been watching a lot of youtube videos on switch repairs, read almost all of the threads on this forum on issues and some solutions.

I have two no power switches. One has a similar issue to anther thread so will leave that for now, this one however:
Checked usb c, looks perfect, gave pins a wiggle under a microscope all look firm. I first plugged into a laptop to check rcm, does not connect/recognise. Does not draw any amps/volts when plugged into the mains charger. Opened up and checked capacitors around the main 3 chips that get mentioned, p13, mt and the other (sorry forgot names) no chip seems to have any capacitors shorting out around them?

So I am asking I have read a few threads about checking certain volts coming in, certain test pads etc now where can i find the info that shows what reading I should be checking/getting. I would like to check there is power coming in and where it is going, that the chips are acting as they should, that the usb is all connected up fine and I think that is it for now.

Thanks for reading my long story, I am a big fan of this forum, a lot of very helpful people on here trying to give advice.

Did you ever get this figured out? Thank you