Did I fry my Teensy 4.1

G

gxhary

Member
I tried connecting the my power source (5V) to the 5V in pin on the Teensy.
I did not properly cut the pads connecting the usb power to the rest of the mcu, now I cannot connect to the teensy at all. I did not see or smell any smoke or signs that I fry it.
Is there a way to fix it?
Also, When I supplied the power through the pins without the usb, the 3.3V pin stopped working, maybe that killed it?

I genuinely don't know what happened.

This is the power source I'm using. I was using the 5V port

Uninterruptible Power Supply (UPS) Module, Supports charging And Power output at the same time, 3S & 5V 5A Output | UPS Module 3S

Uninterruptible Power Supply (UPS) Module, Supports charging And Power output at the same time, 3S & 5V 5A Output | UPS Module 3S
www.waveshare.com www.waveshare.com
 
PaulS said:
Is the 3V3 present when you power the Teensy over USB only?

Paul
Click to expand...
i fully cut the pad, so i cant get it to work over usb, but when i connect it to the 5v pin, i dont have enough voltage to light an led on (i dont have a multimeter, but 3v should be enough to light an led)


on of these chips get extremely hot so quick though. I cannot figure out which one, but i think its the small square one on the bottom left
 

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That's the 3V regulator. If it's getting hot it might be an indication that there is a short somewhere. I suggest looking for errant solder spikes on your connections which might be pulling the 3V down.
 
BriComp said:
That's the 3V regulator. If it's getting hot it might be an indication that there is a short somewhere. I suggest looking for errant solder spikes on your connections which might be pulling the 3V down.
Click to expand...
i removed it from the breadboard and check my soldering, and i cannot find any shorts. The website wont let me upload the image so here is a link to it

iCloud Photos - Apple iCloud

View, organize, and share photos and videos with iCloud Photos on the web. Changes will sync across your devices with iCloud.
share.icloud.com share.icloud.com

(bad solder job i know, i just learnt how to solder recently but no shorts)
 
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