Need Help with Multimeter Use

[RedColoredStars]

So I got the 1-bit mode error in Hekate. I am able to replace the reader on my own as it's just removing the old and putting in the new with no soldering required... but I was advised to check the pins first with a multimeter so I don't waste $ on a new reader if that's not actually the problem. I can borrow a multimeter from a neighbor but I don't know how to use the thing to check the pins and have a few questions.

What settings should the multimeter be on?
Which pins/where exactly am I supposed to touch the red and black probes to?
What readings/values should the multimeter show when doing so?

 

[thesjaakspoiler]

If you got a 1-bit mode error for the emmc, then it is related to the emmc board.
You need a microscope or good camera to see if maybe some pins might have come loose from the motherboard or daughterboard.

Assuming you have a V1/original Switch, there is a ton of information about the SD card reader and points to measure in this thread :
https://gbatemp.net/threads/nintendo-switch-sd-card-alternative-points.579623/
Again, it might be just a loose pin.

Just set the multimeter to continuity mode where it beeps when you connect the 2 probes.
Be careful with the probes as things are very tiny and can be damaged easily when applying too much force.

 

[RedColoredStars]

If you got a 1-bit mode error for the emmc, then it is related to the emmc board.
You need a microscope or good camera to see if maybe some pins might have come loose from the motherboard or daughterboard.

Assuming you have a V1/original Switch, there is a ton of information about the SD card reader and points to measure in this thread :
https://gbatemp.net/threads/nintendo-switch-sd-card-alternative-points.579623/
Again, it might be just a loose pin.

Just set the multimeter to continuity mode where it beeps when you connect the 2 probes.
Be careful with the probes as things are very tiny and can be damaged easily when applying too much force.

Thanks for the link. It all seems like a major pain in my ass and if it WAS bad pins/connection, I'd not be able to fix it anyway. I should probably just put in a new reader for $15 bucks and if that doesn't solve it, just be done with it and call it a day.

Edit: I could try to take a pics tomorrow and see what people think but the only camera I have is my phone, which isnt amazing. Worth a shot I guess.