Anyone ever encountered an issue like this with the ball trough in JP? (See video) Notice how the balls don't move forward until the force of a draining ball pushes them. I've opened up the trough several times and can't find anything binding nor are there any divots in the trough. Maybe a code update would fix this

Around 6.5

I had that exact thing happen a few times and I thought I was going crazy. It ended up being a leg of the diode breaking on the right ramp exit switch or something. I assume at some point when I pulled the playfield, the switch must have hit the black trim for the playfield glass and messed it up. A little solder fixed the issue no problem. If I recall correctly, one of the spitter targets or the bunker or something triggered the issue. Hope this helps and good luck!

I'm having an issue with my bunker coil. The ball basically dribbles out of the bunker and rarely gets sent to the left flipped. It usually gets kicked off the left sling or hits the top of the left sling and goes into the left outlane.

Game is level. Anyone else seen this or know where I should start to troubleshoot?

JP1993 I've had several issues with T-Rex over the years so I know him well. Is his head going all the way down to the saucer? If so, it could be one of two things:

1. Down switch is not activated. If you raise the play field, you'll see a series of switches surrounding T-Rex that let him know where he is positioned. He won't do certain things unless certain switches are activated.

Example: he can only bend down if the center switch is activated. Or, he will only chomp if the down switch is activated.

The other possible item and more likely issue is that the wire that goes from under T-Rex to the chomping coil/solenoid has been damaged from years of moving back and forth. This is quite common and mine was very hard to determine because you have to cut the sheathing that contains multiplied wires. One wire in the bundle was broken and I had to do in in-line solder to get it connected again.

Start with that and you should be able to find the issue.

Regarding the flipper, it sounds like an EOS issue. Search the forum or google and you'll come up with several topics regarding that.

Good luck!

JP1993 That issue is exactly what I had - it's the wire. His jaw works fine when he's upright but half way down it separates and stops working.

My JP is having an issue. The coil that kicks balls into the shooter lane seems to work fine for several games and then ends up getting stuck. The problem is especially evident during multiball. I'm having trouble tracking down the issue and I thought it might be the vertical switch on the right of the ball trough but I've replaced it twice and I'm still having the problem. Anyone else have any recommendations to try? I have a video demonstrating the issue:

dearliza98 - I've encountered this a few times. First thing to check is the right ramp exit switch. Pulling the play field in and out always runs the risk of hitting this switch with the way it mounts to the back.

If that looks good, you'll want to follow that wire (green/black) from switch to switch. If none of those switches are registering, chances are it came loose at one of those switch points. The center scoop switch is notorious for shaking the wire loose.

Good luck!

Hey guys, new issue with my JP. Last night I turned the game on and GI lights came on but that's it. No roar, no sound, no DMD, no attract mode. Tried reseating connectors and cables...same issue. None of the 3 LEDs on the board light, flash or anything either (PIA, 5V, etc). Where should I try next?

gunnermac Are your three lights coming on on the main board? You can troubleshoot if they based on their status. Mine weren't coming on at all and I have everything except 5v at the test points on the power supply board.

Checked fuses for 5v and they were good so I just ordered a replacement rottendog power supply board from Little Sop of Games for $95. If that's the issue, I'll replace the components on my old board and sell one of them. I'll keep you posted.

gunnermac popped in the Rottendog board and everything fired right up. FYI.

Question:
When I first got JP, the upper backbox lights were out. I found a burnt connector and changed/re-pinned the wires and got them working.

A few weeks ago, my power up play board went out and I replaced it with a Rottendog. Everything works great. In fact, the board solved my weak coil issues. However, as soon as I powered the game up with the new board, the top backbox lights are out again. Connectors look good and are seated properly. What else should I check?

...aaaaaand it ended up being F2 on the PPB board. Fuse was blown. At least it was an easy fix. Thanks for the help!

I'm looking for the plastic in front of the VUK. If anyone wants to sell me their original, let me know.

Also clean the shooter assembly, make sure the coil is snug and replace the coil sleeve. Mine did the same thing when i got it. After cleaning, the ball hits the pops at launch every time.

There’s a relay board beneath the play field that controls the left/right motion. Reflow the solder in that board and you should be good to go. Start with that and report back.

Hey, that was fast! It’s a toggle switch.

Congrats! It’s a great game. 6.0 software should work fine with color DMD. It just adds some modifications and better gameplay but it was based on earlier software which supports colorDMD. Maybe ChadH can confirm.

Mine used to do that as well. Loosen up that nut holding the rail and move it slightly to the right. When you re-tighten the nut, hold the rail because it will want to pull to the left and that’s causing the ball to go over the sling shot. Mine did not have a bumper either. Should be an easy fix.

Holy shit! That’s cool!