Nintendo Switch Not charging Volt meter Displays Nothing

Nintendo Questions Nintendo Switch
,
1

I am trying to repair this V1 and it seems someone has already tried the same, the usb-c was replaced but each pin is solid and reads 2.4 volts. They only soldered one anchor I guess to just do a quick test. The diode above it reads the same 2.4.

I’ve already the replaced the M92, there were no shorts nearby just wanted to try. Still no shorts. No changes.

No noticeable shorts near BQ chip.
No shorts near Pi3u chip.
No shorts near Alc5 chip.

Does anyone have any troubleshooting steps for me, that would be greatly appreciated.

2

Where do you measure 2.4V? This are the diode mode values you should get at the usb port.

USBC_values_
USBC_values_1108×734 28.9 KB

3

With the charger plugged in and measuring AC is where I get 2.4v on each of the usbc pins.

In diode mode I get the this result following your diagram:

Orange .482
Blue .787
Red .482
Yellow 0L
Grey blue .758
Both sides of the resistor are .482

The batteries in the multimeter are dying so it might be off.
Where does yellow lead to? Is there a reference for each of these? Thanks you.

4

h.ttps://www.tronicsfixforum.com/t/cc2-shorting-to-gnd/4933/13

I checked the CC2 pin for m92, I get 0L. The 3 vertical capacitors above it are the same but not short. The pins look fine but maybe I’ll go thru and touch them again.

5

If yellow is oL, there is at least a contact problem with the M92.

If I plugin a 5V USB source, the red pins should have 5V. The CC pads reads 0.4V, the both Data D-/+ aprox 0.2V (if connected to a PC)

M92T36_CC
M92T36_CC702×783 37.9 KB

6

PROGRESS: I reflowed the M92 chip, I know what I did wrong last time, and am now reading .478 on CC2. While reflowing I moved the resistor top-right to the M92 and am worried if it got too hot putting it back on. It got stuck to the solder tip for several seconds, 7-8?

The resistor looks fine but I can’t get a diode reading through it, like one probe on top and bottom it doesn’t read anything or measuring to ground, attached back in place.
So I went looking around and a lot of resistors give odd readings according to the diagram. And they didn’t get hot at all.
The one next to it (so still the 2 resistors top right of M92, directly above pins that read 571) the one on the right only reads .48 on the bottom but not the top, testing diode mode to ground.

And the group of 3 resistors and 1 capacitor in a vertical row to the top-left of M92, the two top resistors are only showing 0.34 and 1.34 on the right side and nothing on the left. Is this normal? The diagram shows different readings. But this is still progress.
(I would post screenshot if I could.)

8

You can check the resistance of the four resistors top right. If they have 100 kOhms, they are ok.

The diode mode readings should be aprox the readings shown. If there is a reading complete missing, than there is a problem.

Try to insert an image. If you still can’t post images, upload them at imgur and share the link. (_imgur.com/H3avnNP)

9

It looks like I have to buy some resistors and capacitors. No continuity or resistance for them when pulled off the board. I saw this graph here…

h.ttps://www.tronicsfixforum.com/t/capacitor-and-resistor-values/61/14

That was cool, but my Switch is HAC CPU 20, so there are some differences. I have a donor board that I think I can salvage instead of waiting or buying. But I’m going to buy them by the truck-load if I can. When I’m certain which ones they are.