No photo, No red LED

Similar to this post, putting in a new film pack will spit out the top card, and everything sounds fine, but pressing the button to take a photo does nothing. However, unlike that post, I don't have a red "charging" light come on; I've searched all over the device, and inside the view finder, but I haven't seen a red light anywhere.

I have looked here and here and tried this stuff, but neither have helped me.

I HAVE gotten this to reliably take and print out photos, but only if the lens assembly is fully closed; even a slight lift will cause it to not work. Which does nothing, as with the lens assembly closed, the lens is blocked and just takes a photo of the inside of the unit.

The film pack was manufactured by Polaroid June 2024, and I'm using this in October 2024. Battery voltage is 5.84V, which should be more than good enough for a 6V system