Help! 2pac and newpac miners shutting down after 30-45 seconds

I've got a bunch of 2pac USB miners and I'm using cgminer, followed all the setup steps. At first, everything seems fine, but then just seconds later, problems kick in with all the 2pacs. I also have 3 newpacs. They all start up fine, but one of them just stops working after about 5 minutes while the other two keep chugging along without issues. I’m really confused here. Did I end up with a bunch of broken miners or what? Any advice or suggestions would be super appreciated!!! Here are some pics.

Because new users can't post images. With that being said, what do you have them plugged into. The USB hub might not be able to power all of them or the power supply you are using for the hub might not be up to the task. Can we get the info on that. Also, what PC hardware are you running it on, and is it doing anything else at the time? -Dave

also did you use fans?

you can try restarting

im running a raspberry pi 4b 4gb ive tried multiple powered hubs, even the one from gekkoscience. ive tried just running 1 at a time, same issues. they go zombie. i use a fan on them. all thats being ran is the cgminer and the raspberry pi.

On the 1st post of the support thread the zombie issue is mentioned. Take a look: https://bitcointalk.org/index.php?topic=1764803.0 I asked about the hardware you were using 1st just to make sure that you were not plugging them into an non-powered hub and a RPi3 or something..... Should have mentioned that post. My bad. At a guess the previous owner messed with the voltage potentiometer. Good luck. -Dave