Quoted from newovad:

So, mid-way through ball 2 today, I hear something firing that shouldn't be. Put the ball in the scoop to start a mode and it shoots it right back at me. Get it cradled and pop open the coin door. Sure enough, left scoop is firing. However, it is firing to the beat of the music (I think it was the end of Stampede). That mode finishes and things are seemingly back to normal until the knocker starts firing during the current mode.
I have unresolved issues with the flashers that are listed in parallel with knocker, left scoop and ball release. (Data East L/R deal). So, should I be looking at the Q39-46 transistors? I saw an old thread about unwanted coils firing but no replies or solutions.

Quoted from Bugsy:

I checked that thinking that could be the case, but it is functioning as normal. It releases the balls one at a time.

Quoted from cuebert:

Thanks for this, I have a long weekend coming up so I'm going to look into everything you mentioned (that can be checked without replacing anything, as I don't have the bits, but will inform if I need to acquire them).
Dino targets that are sometimes completing : Spitter (most common) and then the Herrerasaurus (?) //i know they auto collect on v5.13 between balls, but I don't think you're supposed to see it
Hopefully I have a good follow up post over the weekend!

Quoted from djreddog:

Mine are backwards.

Quoted from djreddog:

I just desoldered and resoldered. All good with that now.
Next issue that has reared its ugly head is the trough. At times it doesn’t detect the end of ball when it drains, then after a minute or so ball search kicks in and it fires out another ball. Is this just a bad switch or an opto?

Quoted from djreddog:

Now that you mention it, I think it mainly happens during multiball. I’m out and about today until 8-9pm, at which point I’ll try determine exactly when it happens. Thanks!
If it is during multiball, do I just replace the switch with a new one?

Quoted from PantherCityPins:

Hey guys trying to fix a switch on my JP. The left out lane switch is not working. No response in switch test. There is a wire that had come loose which I soldered back on but still nothing. The right outlane has two wires to it, I don’t see any other wires for the left?
Can someone confirm this wiring is correct before I order a new switch?
[quoted image]

Quoted from Blackbeard:

Noticing a strange issue, and wondering if any of you have had it:
Once in awhile, after the game is turned on and boots, sound/music doesn't work during the first ball. It corrects itself at ball number 2.
Running Rev6.00.
Anyone have this?

Quoted from Blackbeard:

Do you mean reflowing the solder on the connector?

Quoted from Pinbear:

Guys, my JP has a wired problem. Sometimes the right flipper does not work.
It stops working for several seconds (top right flipper is fine) and then it works again.
Any idea how to check on it?
Thank you.

Quoted from Pinbear:

Guys. Fixed the right flipper. You guys are rock. It was the EOS problem. I tried to bend it a little bit and now works perfect.

Quoted from Chitownpinball:

Ive got stuff on order to clean up all my mod wiring, so excuse the mess in my cabinet. Will post more on that later.
Got the trough board all wired up. Working like a champ so far. I have an intermittent problem right now with the ball release mech that is unrelated. It feels gummed up towards the end of the shaft’s stroke when its fully into the coil. So its not pulling hard enough to release the balls on the first try. Hopefully its just dirty, maybe I need a new sleeve. Any one know what size that is? Dont have a manual...

Quoted from chrisnack:

Got everything address in my JP except for the ball kicker into the shooter lane. I replaced the switch and now it’s seeing the ball fine but takes 2-4 attempts to eject the ball into the shooter lane.
I’ve tried adjusting everything but I’m guessing there is a simple fix I’m missing?
Appreciate any insight, last thing to have it working 100%!

Quoted from Chitownpinball:

New switch installed, this issue is still not resolved.
The issue still seems to be the ball release mechanism. My game is level side to side, and I even increased my angle to see if that would help. Balls are still getting hung up for some reason right at the edge of the ball trough rail where it meets the upkicker assembly. The release coil doesnt seem to be able to pull hard enough to release a ball. This is a brand new coil, and the mech isnt dirty. If I do it by hand, it still has trouble, shown in this video. Everything is tight. Is my coil on backwards or something?
Can any one answer me these questions:
Is there any reason for the upkicker to fire if there is no ball in it? Does it fire in a sequence with the release mechanism or does the game HAVE to see a ball there? My game seems to fire the upkicker over and over when the ball is hung up out of the release.
Which way does your ball release coil face?
A short video of me trying by hand to release balls

Quoted from Chitownpinball:

Coil sleeve came with the coil from marco. The stop....hmmm.
I also got a recommendation to sand the trough ball rails in case of pitting/corrosion.
Super frustrating. I wont have time to work on this now until April. Any tips are very much appreciated.

Quoted from Chitownpinball:

Get out! Why would marco do this to me?
Guess I should have a manual...
Thanks!

Quoted from Mr_Tantrum:

I need to video it to determine and I've not had a chance to test by hand (just played 3-4 games since I've had it setup). It looks like it might be coming out of the loop at an odd angle and just hitting the side that leads up to the dock/free ball and bouncing off that. I'll collect some more data today and post.

Quoted from Mr_Tantrum:

Can somebody please tell me what this short black rubber bungie with the s-hooks is for exactly? Funny thing is that I didn't even notice the bright orange sticker until I posted this message, so know I'm thinking it is some sort of security mechanism for when you have the playfield fully lifted?

Quoted from edward472:

Major problems tonight.Turned on my machine to play and the right lower flipper was fluttering. So I turned off the machine checked my EOS switch. Soldered a wire on the coil that looked suspect. Still had the problem. Took out my multimeter to check the diode. I checked the left flipper coil first to check if my multimeter was set right. While testing.... my wife turned the machine on. Thought I needed more light!!! The left flipper coil locked on and blew the F3 fuse in the flipper board. Replaced the fuse and tried to go into diagnostics. Pressed the step button and the left flipper coil locked again and blew F3 again. So what kind of damage did I do? Where do I start to go about fixing the locked on left flipper coil and my fluttering right flipper?

Quoted from Pinbear:

I still have the issue with my right flipper. I replaced the EOS. It works for few days and it has the same problem as before. While I raise the playfield and short the EOS, the flipper works. After I adjusted the EOS, it works for few days again. Is it possible the problem is on the flipper board? Thanks.

Quoted from Chitownpinball:

OK, so I purchased the “correct” sleeve, and it looks exactly like the ones thats already in there....
Im still having issues. The game still doesnt recognize that there is a ball in the trough vuk. It will leave a ball sitting there and think that a ball is missing and go into ball search during multiball.
The switch tests fine in diagnostics, AND I replaced the switch based on chadh recomendation that ut could be bad if it tests good.
What the fuq is wrong with this stupid machine? Im super pissed right now. [quoted image]

Quoted from Mr_Tantrum:

Can somebody tell me what this hole is for? There is nothing on my game that lines up with it.[quoted image]

Quoted from Mr_Tantrum:

I seem to be dominating the thread this morning - sorry, but lots on my mind.
A few pages back somebody mentioned the EnerGI Maestro. This was the first time I've ever heard of this, and after checking out the website I am very interested.
In helping me determine if I should purchase one or not, I was wondering if those of you who have installed one on JP can please comment regarding your overall thoughts, ease/difficulty of installation, satisfaction with your purchase, your settings, etc.

Quoted from Jimmyapple:

So.... I was cleaning my JP playfield, lowered it and somehow sparks flew right as I was trying to seat it. Yes I know turn it off. Now, the trex AND the trough clear are not responding at all. During the trex diagnostic nothing happens and I get an error for trex switches. When I put it in DX mode the switches register. Any ideas where to start??

Quoted from daveddd14:

So I have been part of the club for a month or so and I have two tweaks that I can’t figure out.
1. The ball get stuck behind trex when it slowly rolls back from the right (picture is of the post to see if it is the right size).
2. When riding the right ramp it flies around and jumps off of the ramp after the divider 20% of the time. Picture shown over the top of the pop bumper, what should go there?
Game is level.
Thanks,
Dave

Quoted from Chitownpinball:

Most of us have no diodes because we have the new trough board. At least myself and one other guy with the issue have this board.

Quoted from newovad:

I was assuming he was talking about the mini switch for the VUK. I checked it and looks like it will be a PITA to switch it out. I think I'll wait this one out.

Quoted from hawkeyexx:

It's been over 2 years and now I've decided to get JP up and running. I'm missing my pop bumpers wiring....can someone please share a few photos?