Hello
wondering which board would be best to use together with teensy 4.0 and/or 4.1.
I would need to play some songs at the "same" time, like they overlap and dont stop the song already playing.
The board should include the amplifier on it...
Uh im really unsure why I wrote that. Im Sorry.
Here again bulleted to make it clear:
3.3V is shorted to GND (diode tester beeps)
3.3V to GND is at 16-19.5Ω when turned OFF (varying because of heat after it was on)
3.3V to GND is at 0Ω when...
I attached some images of my teensy 4.1
I also cleaned the board with some chemical pcb cleaner to make sure no dirt shorts somewhere.
I measured again and still have a voltage drop of 0.0mV over all GND pins together and/or the 3.3v pins...
Yeah, thats the problem im at right now.
I have used this board as a Joystick(keyboard) at some time and it worked all time long fine.
Just grabbed it again and wanted to use it. No reaction.
I a bit experienced in this electronic stuff and...
No, the pc doesnt even detect the board, also I have a fairly fresh windows install, my laptop also doesnt recognize it. Other teensy 4.1 or 4.0 do work. Also no LED lids up when trying to press the boot button
It seems like the full 3.3volts are there. Input voltage is 4.7volts. I guess because of the hot parts which draw a big amount of current due to the 15 ohms between 3.3 and 0v. Thats weird
Any other idea?
So there's 15 ohms from GND to 3V3. Regarding to the schematics there are 13 smd capacitors and 1 resistor in between those two pins, also U2, U3, U4 and U6. How would I start finding the broken one? De/resoldering each after another?
Edit...
Nah I dont have a infrared camera. Also im not very sure how to find where the short comes from. Unsoldering parts and checking if they are in good condition?
Hey everyone!
Just chosed a random of my many teensy board, but It didnt turned on at all.
Then I realized that U2 is getting very(!) hot. Also Q1 is extremely hot.
After that I hooked up my multimeter to check if any pins are shorted, sadly...