+1

Gustavo,Stand in front of your machine,Make a video showing the game off,Turn the game on and just show the display and the boards..Please
this way will give everyone a clear picture of exactly what your game is doing.

Everything looks to be in proper working order!!??? The display is fine,The boards led is fine.The only thing i see is the crane which is a common problem The crane is operated by an opto,Lift up the playfield and in the middle/back there are 2 opto boards there.Reseat the connectors on both boards,When your done doing that power on the game and see if the crane stops.If it does not then that opto(Most likely the transmitter)is faulty and needs cleaning or replacement.

Why???? your game turned on just fine,If it was a switch matrix problem believe me your game will not allow you do anything.I'm going by what i saw in your video and i was hoping you would hit the start button to play a game but that didn't happen

OK but that would not stop the game from playing

Does the game play,When you hit start button can you play a game???is it on free play???
Focus on getting the game to work first then we can deal with the other stuff on the playfield such as switches,coils,crane ect.

That's great,Like other Pinsiders have stated it could have been the ribbon connectors
Now,Try reseating the connectors on the 2 opto boards under the playfield..Do this with the game powered off

Those are also run by optos!! Reseat the connectors on opto board!!

Yes i know....I took a judge dredd apart one time went through every step..I know the game like the back of my hand

This game runs on a lot of optos that's why there are 2 opto boards,This is very important to understand and keep in mind

For future reference or future owners:Judge Dredd is a beast for some but to be honest with you it was the easiest game i have ever worked on.I had a switch matrix problem and yes U20 blew....Just replace U20 right??Well,not the case i had a short somewhere on the playfield or somewhere under the playfield.What I had really learned was step by step and patience was key.Heres my JD experience Link below

https://pinside.com/pinball/forum/topic/whats-the-deal-with-u20-and-switch-matrix-lately

I think you might want to start reading from the top first

The game is spitting out two balls...OP stated in above post

That's Right,Op says one thing then does another..Jumps from optos to switches then to slingshot...Thats why I left it alone.Same crap happened in another thread OP did the same thing

Left slingshot mentioned again.....switches to optos to slingshot..what is so special about that slingshot?? and Yes i know its not run by an opto.The coindoor is open and that kills the hi-power to the coils thats why its not kicking in the test...Pull the hi-power nob or close the door and slingshot coil will fire when you hit that switch

You might have those switches wired in the wrong order or a diode has shorted on one of those switches IF there are diodes there..I cant remember off the top of my head

Check the wiring on that opto,If that opto is dead then if would need to be replaced and 95% chance the transmitter has blown on that opto(The one with the light)