Quoted from Rensh:

So had a look at the alien today. The pin was at rel 102 so an update to 110 including IO boards update was easy.
Than with help of Helmut and some spare leds fixed the broken leds. If you know it’s easy to do, would recommend alien owners to stock up on these. Had three broken ones which also take out the leds further in the string. Than also had to fix wire issues at the back of the sound amplifier. Man, that is crappy stuff those connectors there.
So now up and running and ready for testing. For sure more will pop up but for the moment we can enjoy playing it
One question for owners, had a xeno Multiball starting where the ball went so fast that the magnet didn’t grab it and than the tongue remained out during the rest of the multoball. Is that normal? All other plays it was fine.

Quoted from legionsoup:

Tried resetting the IO2 board as well as making sure all of the dip switches were set to "off." Even turned them on then off just to be sure.
I'm hesitant to hot glue anything since it may not work (not saying it won't and I'm glad it worked for you) but if it doesn't work for me, then I have a cable hot glued that I will need to remove at some point.

Quoted from way2wyrd:

That's a great solution for a bad usb port on the main cpu

Quoted from legionsoup:

Just so I'm understanding, you placed the USB bus at the CPU, so 2 of the spots where USBs were previously plugged in are now vacant? And you run all 3 of the playfield USB cables into a single USB spot?
Meaning, of the 4 USB cable slots, 2 are empty, 1 is goes to the bus (which goes to the 3 IO boards on the playfield), and 1 goes to the lower IO board?

Quoted from legionsoup:

I'll give it a try gotta get to the store to grab a USB buss.
Also, I tried replacing all 4 USB wires. Swapped the around, etc. The IO2 board is always the one that is "missing" on boot up.
It's like the board isn't getting power. The 12v and 70v LEDs come on briefly when I turn on the machine, then they dim after a second and no lights at all. The other 3 IO boards have several LEDs on with the USB light flashing green.
I'm gonna keep trying with those USB cables, but even when those are unplugged from the other IO boards, they still have LEDs on. All except for IO2, which doesn't seem to be getting sustained juice.

Quoted from legionsoup:

It should have updated software. All 4 were updated with the 1.1 software. Neither of those lights are flashing. I can make and link to a YouTube video of what happens on boot if that helps.

Quoted from legionsoup:

Yes. I swapped board 1 and 2 and still got the error for the board 2. So the board itself seems like it's working.

Quoted from legionsoup:

I tried adding a USB buss but that didn't work. Tried it in all 4 USB slots at the CPU. Same issue. IO board 2 couldn't be located.

Quoted from Agent_Hero:

My Alien was one of the Texas Pinball Festival prototype machines and I finally got around to swapping in the replacement parts, though I'm not sure where these items in the attached picture go (I have dozens more of the plastic caps not pictured):
Also, the new Xeno head seems to be active with its jaw moving (seemingly) as it should in test mode, but the tongue is not moving for me. It shows an error for a stuck switch--is it referring to the switch under the top half of its head? That switch appears to be fine.
Finally, would anyone have any ideas for a way to frame and protect the "in play" edges of the lower playfield LCD? Seems like the clearcoat in that area could chip/flake/crack.

Quoted from Join_The_Cirqus:

More
Try reseating the IO board and see what happens.
Also if that doesnt fix the issue, try swapping that IO board with another from the game and see if the issue is resolved.
If so, its the IO board for sure

Quoted from pascal-pinball:

Is it safe to buy an Alien (showroommodel) so maybe it is one from the first runs...