Originally Posted by ChevyGuy
Thank you, how can I prevent that from happening in the future/ what could have cause it? There was nothing obstructing or to short it out back there!
As it is plastic, there technically is nothing to short out. From the pictures, it does look like you have an older model Tube. The older model Tubes, such as yours (it looks as if it may be an EL Version or older), were all passive Tubes with drivers that were rated at 100-150 watts max. Toss in the age of the Tube, any exposure to sunlight, and possible a higher wattage input, and these old spring loaded terminals can melt, especially with a wire size that is too big for the spring terminal to fully seat. The terminal cups now all have banana posts, which seem to be the industry go to. Look to replace the terminal cup with one with banana posts and never look back. If you can't find a terminal cup with the exact circumference, pick the closest size and carefully trim the opening of the Tube. Let me know how everything turns out. Keep it low.