I've found my first stinker... the cart I pulled out for neoxeno. Every cart I've tested so far has passed using my TE. His did not, as it failed to operate in my system. I'm going to test on my other systems before marking it as a DOA. This situation is the reason I purchased an extra cart.
Just to elaborate to everyone of the procedure I follow:
When I receive a PM, I check to see if the individual wants the cart tested or not. I write the person's username on the bag each package is in. If the cart isn't to be tested I write "No Test" on the bag. If it gets tested, I perform the following tests: connect the slim loader to the PC by USB, insert the flash cart, write to the flash cart, test in my TE for proper power on/operation, and finally test to ensure the reset button works. If it passes, I write "OK!". If it fails, I perform further tests.
No worry, neoxeno. I've got ya covered.