Quoted from Coyote:

Because, for money.
These games were made for a COMMERCIAL environment. That is, hey were made to MAKE MONEY. In case the slot machine scoop switch was bad, every time the ball would end up in the slot machine, the user would have to wait for the ball-search to start before getting the ball served back to them. They would get pissed off really quickly - every shot to Dead End, Camera, defeating The Power, Skillshot, and Piano. They would have to wait. And likely either walk away, or tell their friends not to play it.
There's no reason NOT to fire it if we know the ball is going to end up in the slot machine. (Like.. all those shots I just mentioned above.) This way, at least, the only time the player really has to wait is when they shoot the ball into the slot machine. ... As opposed.. every OTHER time.

Quoted from Coyote:

Because, for money.
These games were made for a COMMERCIAL environment. That is, hey were made to MAKE MONEY. In case the slot machine scoop switch was bad, every time the ball would end up in the slot machine, the user would have to wait for the ball-search to start before getting the ball served back to them. They would get pissed off really quickly - every shot to Dead End, Camera, defeating The Power, Skillshot, and Piano. They would have to wait. And likely either walk away, or tell their friends not to play it.
There's no reason NOT to fire it if we know the ball is going to end up in the slot machine. (Like.. all those shots I just mentioned above.) This way, at least, the only time the player really has to wait is when they shoot the ball into the slot machine. ... As opposed.. every OTHER time.

Quoted from PinballAir:

Hi guys, new to the club!
Picked up TZ yesterday.
Only way to get it out of basement was to REMOVE the head. There had been some construction after it went in there.
I have everything connected except J116 and J118. They look the same and both send +12v to optos.
J116 goes to cabinet optos and J118 goes to custom opto sw 10 pcb. What is the custom opto pcb and where is it? Based on the drawings it looks like the plugs would be interchangeable. Both have the ground and are pinned the same. The cabinet optos do not show a ground but both plugs send a ground out.
I would appreciate any help. I am sure i can follow the wires to see which is which if no one here knows.
TIA
Cliff

Quoted from PinJim:

suggesting that it should fire the slot scoop randomly every few seconds just in case the switch is bad?

Quoted from bikefreak:

Why does it fire twice? (good measure? lol)

Quoted from Coyote:

No. You either didn't read, or I was too techy.

Quoted from PinJim:

I read it but didn't understand your point of view on when it should fire. Anyhow.....do you (or does anyone) know if the same logic is coded in if you hit other shots like the piano, camera, etc.? I can run an experiment to see if nobody else has tried this / can verify.

Quoted from Parker_tz:

My Twilight Zone restore is almost done. Faded to great
[quoted image][quoted image][quoted image][quoted image][quoted image][quoted image][quoted image][quoted image][quoted image]

Quoted from Parker_tz:

My Twilight Zone restore is almost done. Faded to great
[quoted image][quoted image][quoted image][quoted image][quoted image][quoted image][quoted image][quoted image][quoted image]

Quoted from Rdoyle1978:

Great work! Some day I want to get mine looking that nice!

Quoted from Parker_tz:

My Twilight Zone restore is almost done. Faded to great
[quoted image][quoted image][quoted image][quoted image][quoted image][quoted image][quoted image][quoted image][quoted image]

Quoted from Parker_tz:

My Twilight Zone restore is almost done. Faded to great
[quoted image][quoted image][quoted image][quoted image][quoted image][quoted image][quoted image][quoted image][quoted image]

Quoted from RobbyIRL5:

Having a bad day with dots on my WPC machines. My gumball Geneva switch is err’ing (per picture). Pulled the manual and don’t really see a good picture of what I’m looking for. The switch is open, and it’s showing in the manual as under the playfield. Is this an opto or regular switch, should it be open, and is this a common issue?
[quoted image]

Quoted from Manny65:

Wow that's come up well - congrats on the job! Like the black trim ... was the PF restored or replaced with a repro?

Quoted from yzfguy:

That black trim looks really sleek

Quoted from Parker_tz:

It is normally open and it is a microswitch not a opto.
This might help
https://pinside.com/pinball/forum/topic/tz-s-geneva-switch
Or this
https://pinside.com/pinball/forum/topic/tz-gumball-geneva-switch

Quoted from RobbyIRL5:

Did it come with a machine screw and nut on the underside of the ramp?

Quoted from Coyote:

No idea, you'd need to find the maker of the mod and ask them, sadly.

Quoted from RobbyIRL5:

Ugh, that's a mod? I thought I got them all off (a pyramid and space ship!). I googled TZ playfield and saw this same clock mod on some other playfields (or at least one), so thought it was stock.
Other than the PinStadiums, anything else standing out on my playfield that looks to be a mod?
[quoted image]

Quoted from RobbyIRL5:

Other than the PinStadiums, anything else standing out on my playfield that looks to be a mod?
[quoted image]

Quoted from gunstarhero:

Blue clock housing, white clock face, gumball light kit... I think you have a clear ramp instead of the original smoked one...it all looks pretty normal besides that.

Quoted from RobbyIRL5:

Other than the PinStadiums, anything else standing out on my playfield that looks to be a mod?

Quoted from RobbyIRL5:

Other than the PinStadiums, anything else standing out on my playfield that looks to be a mod?

Quoted from gunstarhero:

white clock face

Quoted from bikefreak:

Two other things on my list that I haven't looked at yet. (may or may not be related)
1) diverter (on ramp before the power field) flips twice sometimes. (when the ball is there) Flip to clear ball, then flip again 1-2sec later.
2) left sling during play will fire. Usually when other things around there are banging. (my guess but haven't checked yet is the switch gap may be too small and vibration is causing it)

Quoted from Parker_tz:

It is stock but came on early production and late prototype games for example I have game 393 and it has a white clock face. It also has the right spiral sign and I want the original left one.

Quoted from RobbyIRL5:

Ugh, that's a mod? I thought I got them all off (a pyramid and space ship!). I googled TZ playfield and saw this same clock mod on some other playfields (or at least one), so thought it was stock.
Other than the PinStadiums, anything else standing out on my playfield that looks to be a mod?
[quoted image]

Quoted from Rdoyle1978:

The big question is, do you have the original RIGHT side sign?

Quoted from RobbyIRL5:

Ugh, that's a mod? I thought I got them all off (a pyramid and space ship!). I googled TZ playfield and saw this same clock mod on some other playfields (or at least one), so thought it was stock.
Other than the PinStadiums, anything else standing out on my playfield that looks to be a mod?
[quoted image]

Quoted from Green-Machine:

Pinball and bourbon!
[quoted image]

Quoted from Rdoyle1978:

I’ll be right over!

Quoted from RobbyIRL5:

Sorry to dump on this thread as I’m learning what makes and keeps this pin going, I hope to pass on the knowledge I’m learning to the next TZ noob that comes along.
Anyway, any trick to keeping this guy (clock) centered? Mine keeps falling in the ramp lanes. Easy answer is to tighten the mounting screw, but whoever rebuilt this mounted with a self-tapping into the plastic (and it’s not gripping tight), assuming that’s the issue. Did it come with a machine screw and nut on the underside of the ramp?
[quoted image]

Quoted from RobbyIRL5:

Ugh, that's a mod? I thought I got them all off (a pyramid and space ship!). I googled TZ playfield and saw this same clock mod on some other playfields (or at least one), so thought it was stock.
Other than the PinStadiums, anything else standing out on my playfield that looks to be a mod?
[quoted image]

Quoted from Green-Machine:

I’m putting in my TZ a color DMD this weekend. Any advice or is it pretty simple?

Quoted from marioparty34:

Simple. The instructions are easy to follow. Good luck!

Quoted from Parker_tz:

and I want the original left one.

Quoted from Seatmandan:

I just purchased this one a few months ago, and I'm not regretting it at all- Best one I've seen in my opinion. the stupid metal one from PDI that's like 300 bucks is a rip-off.
This sign is very similar to the original deleted one,
ebay.com link » Twilight Zone Pinball Spiral Sign[quoted image]

Quoted from bikefreak:

How is the sign mounted? looking at the back of the sign I don't see a mount point. Does it just hang on the bulb? Seems like it would fall off if that were the case.

Quoted from yzfguy:

It is just held on by the bulb, and it does fall off occasionally. I haven't had time, but I'm going to figure out a better way, as it is pretty annoying to have it fall off mid multiball.

Quoted from Seatmandan:

I just purchased this one a few months ago, and I'm not regretting it at all- Best one I've seen in my opinion. the stupid metal one from PDI that's like 300 bucks is a rip-off.
This sign is very similar to the original deleted one,
ebay.com link » Twilight Zone Pinball Spiral Sign[quoted image]

Quoted from RobbyIRL5:

Ugh, that's a mod? I thought I got them all off (a pyramid and space ship!). I googled TZ playfield and saw this same clock mod on some other playfields (or at least one), so thought it was stock.
Other than the PinStadiums, anything else standing out on my playfield that looks to be a mod?
[quoted image]

Quoted from Rdoyle1978:

Just for reference, here’s what the original 2 spiral signs looked like:[quoted image][quoted image]