Years ago, a number of us tried to make reproduceable translites of the backglasses for people missing the backglass entirely. Here is the collection hosted on Davids site.

http://zaccaria-pinball.com/repro/frank/index.html

look at the link on the bottom. You;ll see how I did the Robot backglass that Neo now owns

In PA, the most common zacs are devil riders and pinball champ. Farfalla and magic castle are common games. The hardest to find games are spooky and Zankor. 8 years ago I had 9 generation 2 zacs in my home and several more i tried and sold. There are also a bunch of generation 1 games, but I didnt find them as fun ( although I really like Stargod)

That surprises me since we both like Robot and Farfalla. I couldn't wait for Blackbelt and Time Machine to leave the garage. The other 11 gen2 games were way more fun to play (Although I never owned Spooky).

Pinball Champ is one of the top zacs I owned, along with Magic Castle, Farfalla and Soccer Kings. The rest were very close in fun factor.

In 2004 a container of zacs ( over 150 games) was purchased by kurt weaver and delivered to ohio. Those 150 games were sold on ebay and they made their way across the usa. I ended up with 12 games after a few years of buying and selling. There were 20-25 different models in the container from all eras of ss - pre gen1, gen 1 and gen2 games. It was wild. Everyday there were new games, but it was a crap shoot as mostly everything needed repair. But, plenty of boards, backglasses,etc were also sold.

The only game that was not in the container was spooky. Of course i tried to pick up a spooky for 5 or 6 years and it always eluded me. I knew of 3 in the usa when i stopped looking ( and several in europe). At least i found a zankor and new stars phoenix along with the rest of the gen 2 games. They were good times. I think now more people see the beauty of the zacs as they have cerainly become more popular.

Nice. Stargod is the best generation 1 zaccaria that I owned and I played it quite a bit for years.

See if yours has the rare 1b1144 sound board as opposed to the 1b1125. I only saw one of them (my game) and we were able to dump the roms, but I only heard the sound from this board in the emulator.

http://www.zaccaria-pinball.com/gen1/index.html

Also, set the game for "score to beat", I think that's what its called and every game you get a different highscore to beat. Its quite fun.

I had 10 or 11 of the generation 2 games at one time and a few other gen1 games at different times. Of the 15 or so titles I had my favorites were:
Gen2 - magic castle, soccer kings, farfalla, pinball champ, zankor, robot.
Gen1 - stargod
I didnt care for black belt at all, nor did I like time machine (sorry)

I'm curious if you bought the Zankor in PA as its the only one Ive heard about in the USA and i sold it to a guy in PA. I know of 6 more in europe. I tried for years to complete the gen2 games, but could never find a spooky. It took me 5 months to fix everything on zankor, so it was a major job, but it was really strange and fun. The sound board was the hardest thing to find from italy.

The zaccaria games a beautiful and fun to play, but difficult to find parts.

http://www.zaccaria-pinball.com/gen1/repairs.html
section: Settings, Setup, and Audits
setting #6 is number of balls

You need a 1B1165/1 MPU. Not just any zaccaria MPU. I know you know that but when asking around, its good to be specific.

These games are really fun but sometimes repairs are exhausting. I've fixed probably 2 dozen zac boards when I had the collection and 2 of them I had to send to David. One MPU board I replaced just as many chips/components as you and I could never get it working. What a train wreck. It became a rate of diminishing return and David was able to save it. Yes, you'll wait for the boards to return but in the meantime search ebay and you may get lucky. It always helps to have a spare set of boards but its really hard to find working boards anymore. Unfortunately I sold all of my boards and stuff to David, so I can't help but when it gets so frustrating its time to send it out. Good luck!

Very nice Clay! I haven't seen that many zacs in a long time.
You even have an Appletime Thunderman - is this working? I never saw one working...

You need to replace the sound roms for different languages. I had Italian in all of mine, they sounded really cool and authentic even if I didn't understand them

Mystic Star

http://www.ipdb.org/machine.cgi?id=3375
Bally -35 MPU conversion

I've never seen one of these in person.

Wow very cool, congrats! I was never able to get this one in the collection so kudos for your persistence. I'd love to hear about gameplay when you get it running.

Well this is just my opinion, but I've had 12 of the 15 generation 2 zacs and of the list I'd say these are must haves.
Soccer Kings
Robot
Zankor
Farfalla
Magic Castle
Pinball Champ '82/Pinball Champ (they made 7 digit and 8 digit models in 1983)
Pool Champion
Mexico '86

These would be tough/impossible to get, but I never owned them, so not sure how much fun they are:
Spooky
Clown
Mystic Star

These I didn't like and they didn't last more than a month...
Devil Riders
Star's Phoenix/New Stars Phoenix (only multiball gen2 game)
Time Machine
Blackbelt

There are a bunch of generation 1 games and a couple of pre-generation 1 games, but of that list I only found this one to be fun:
Star God

Appletime Thunderman, Mr Game and the Technoplay games don't count as gen2 games to me, they are different.

In 2004 when I got into the Zaccaria games, there was little information on the game and the Zaccaria company. Federico Croci had a website tilt.it and this site had about the only info on Zaccaria at the time. Owners of the games at that time had a yahoo group entitled the ORANGE GROUP, something like that and we exchanged information on the games and new discoveries as we got to know the games better.

Dave took all the information he uncovered and helped hundreds of new owners and created his website (www.zaccaria-pinball.com) and another owner and huge collector of the games in Hungary Laszlo created a site with every zaccaria game www.zaccaria-pinball.hu. It is Laszlos collection that later was used for the zaccaria pinball package on mobile iphone/ipads by ASK Homework.

Federico Croci compiled tons of information about the company , met with the Zaccaria brothers, had pictures of the factory and the artist, engineers, etc He was going to write a book but never did. That would be quite a read... I'm sure most of this could be google searched.

Actually Clay that's exactly what I find interesting about the zacs. Aside from beautiful artwork, durable playfields and good sound/music, they all have some little oddity had never been done before and that turned out to be FUN in gameplay:

All of the gen2 games featured an elevated shooter wireform that was just cool and gave you additional space for another lane or two. Here are some highlights of the games I favor:

Soccer Kings - Ball in the center rejector releases a Fake multiball at the soccer player. Your ball is then returned from the center rejector.
Magic Castle - Dracula backglass animation with flashers and quick 1 flip mini flipper ball save in the outlane.
Zankor - small ramp pops out to hit LARGE cannibal target, upper playfield returns plunged ball, cool jungle music/speech
Robot - 5 pop up cylindrical bash targets that have internal lamps
Farfalla - 17 drop targets and upper playfield with flippers on a relay (on when ball up the playfield, off when it leaves it)
Pinball champ - similar lots of drops with upper playfield with flippers on a relay (on when ball up the playfield, off when it leaves it)
Pool Champion - pop up cylindrical targets, strange 8 ball flipper that acts like a gate.
Mexico 86 - cool smaller playfield in upper main pf quadrant with full size flips, pop up cylindrical targets and a large bullseye target uncovered

I asked this when I got my Robot and was told the 2 light blue squares with snowflakes are the correct targets. They are also shown on the flyer.

Bonus thing? Are you talking about GAME TIME Bonus? This is a zaccaria feature that was introduced in one of the last generation 1 models (EWF) and continued in all of the generation 2 models, like Robot. Like your other 2 previous balls, your last ball builds bonus when you hit switches (pops, rollovers, targets), but additionally it adds time to the GAME TIME box, starting at 10 seconds. When you drain, you get to play a BONUS BALL for the time accumulated on that last ball. When the time is up, flippers drop and the ball drains, bonus counts down and game over.

I read that Americans hated this feature when gen2 games starting hitting our shores in the early 80s so they added an option to turn this feature off. I think in one of my pinball champs there was a service bulletin about it. I don't recall if its still in the menu, but I love game time bonus, its so unique. I would never turn it off.

If I recall the targets in your game are from pinball champ. Maybe they ran out or someone changed them along the way...

Those mini lamps in the Robot heads are T1 miniature bulbs. I don't know if you can buy sockets and I used incandescents with wire leads when I changed them in the game when I had it. I think I ordered them from here long long ago

http://www.allelectronics.com/make-a-store/category/320/lamps/1.html

Did you finally get a Robot repro backglass? That's awesome news!!!!

It's Italian and pronounced Zac ca Ree ahh.

I think this is the first Thunderman that I see working. Good job clay bringing this one back! Is the game any fun?

Its used as a gate that opens when a sequence of balls is completed. If I recall when you hit balls 1-7 (targets), the flipper (gate) opens to get the 8 ball shot. It only opens once and closes once its not like a regular flipper.

I had a New Stars Phoenix, which is the same game but it had the 110 transformer. I don't know if the previous owner modified it, but it looked stock. Not a very fun game however, not one of my favorites.

Looks like you have the same game I sold a while ago. First Robot, now new Stars Phoenix

Great collection! Surprised you didn't find a pinball champ yet, I had 3 of them over the years what's your favorite so far?

I had most of the gen 2 zacs and Farfalla is way more fun than Time Machine. Play both and see which you prefer.

Since you won't find a zankor or robot, my other favorites would be soccer kings, magic castle, Farfalla and pinball champ. Honorable mentions to pool champion, Mexico 86. Ones I did not enjoy are blackbelt and time machine. Devil riders was just ok and I was sure I was going to like it. I never had a spooky so I can't comment on that one.

Definately look for the generation 2 zacs mentioned here, there are generation 1 games but they are really simple gameplay.

They used to be real cheap, but now they are harder to find. Condition and working are big factors because they are hard to fix if you are not familiar with them and parts are hard to find. Working game $800-1600 maybe and higher for excellent condition. They are all single ball games except the last one they made, but they sure are fun to play.

Glad you liked it. Its a personal preference.The only gen1 I truly liked was Stargod and if I had a choice of gen1 or gen2 I would pick gen2 everytime. I really like the speech and music of the gen2s.

There is a square relay under the playfield that directs the power to the upper flippers. This might be flaky. See the scanned Farfalla manual page 26 on the gen2 section on www.zaccaria-pinball.com . There is also a switch where the ball enters the upper playfield. When the ball hits this it triggers the relay.

I seem to recall Mike Pacak has a FAST TRACK. I believe it works, as I inquired about purchasing the game a while back. Might check with him and take a road trip....

First off, Zaccaria games are hard to find parts. You sometimes get lucky from another owner, or interchange rarely with williams parts. With that said, maybe something like this would work. I had spares but have no idea where they are, probably gave them to the guy that bought alot of zac parts from me.

http://www.marcospecialties.com/pinball-parts/10-135

page 18 shows the flipper spring
http://mirror2.ipdb.org/files/824/Zaccaria_1983_Farfalla_Manual.pdf

Opinions vary, but the most fun I had of all the zacs I owned and played were with the generation 2 games.
Games such as Farfalla, Pinball Champ, Magic Castle, Soccer Kings, Zankor, Mexico 86, Robot, Pool Champion are the best.

The only generation 1 game I truly enjoyed was StarGod.

There are couple of stinkers in the generation 2 games (I'm looking at you Black Belt and Time Machine) and 1 game I never played (Spooky), but its so rare you probably won't find it anyway.

The backglass is really pretty in person on Zankor.

I'll tell you a funny story about that. I agreed to purchase a Zankor sight unseen because it was the only one in the USA at the time, but it didn't have a backglass. It was part of a container and was non functioning, and I mean REALLY non-functioning. It took forever for the seller to get around to it and in the meantime I found a backglass in England and paid the seller and had it shipped. Well I was ripped off and never got the backglass or my money back. That was a hard lesson.

So 6 months come around and the I am going to pick up the game without a backglass. I get a call the night before from a friend and he said "Hey, I know you like these zac games and my friend has a backglass for one, would you be interested in buying it? I asked him what was the game and he said "I dunno something about zardoz or zandor. I said Zankor? He said ya, thats it! Needless to say the next day I picked up the game AND the backglass.

I spent the next 5 months working every night fixing it though, ordering parts from all around the world, but it was worth it! What a fun game.

Zankor was an original theme. It wasn't Rimondini (artist) since his last game was Mexico 86, so the brothers hired another artist to complete the last 3 games (Zankor, Spooky and Stars Phoenix). It felt disjointed in a quirky way but there were some really weird things in the game that just gave it such charm. The upper playfield didn't make sense but it was a novel way to meet a plunged ball, the large headhunter target with flasher was cool, the artwork was all of the place but ecclectic and interesting.

You could theorize about the main character, why was he in the jungle with monster spiders and weird shit all around, was he saving the girl, as his expressions were that he couldn't care less ! Was this on earth or maybe a weird planet? Freaky flowers, all kinds of imagery. It was a challenging game to play, pretty hard to score.

Years ago I exchanged some emails with an Italian guy whose friends band made the music for the game. There were several riffs in the game and one of the best ones only plays at the end of the game and only once. Also one of the few games that only had Italian language roms (spooky too)

Cool thanks for the correction and glad you still have Spooky! There are certainly only a handful in the USA.

Nope, nobody knows and things change daily so I wouldn't worry about it AT ALL. Proceed!

I had to check this one, but according to the manual it says 4 balls go in the upperlevel goal area and one in the drain.
http://www.pinrepair.com/zac/manuals/zac2_soccerkings_man.pdf

1 switch? Then you are right. It's a cool illusion. When I got the game I was surprised the first few times the balls shot out of the upper trough, thought there was a channel leading to it only to find the upper playfield had its own balls and main playfield ball never meet really a fun game, I miss this one a lot.

Thats the outlane ballsave. You have one shot at timing it to hit the ball with the outlane flipper before it drains.

take the glass off and test the outlane switch with your finger and see when the flipper gets activated. Maybe your outlane switches needs adjusting to activate quicker (less gap).

I had a problem with my devil riders upper flippers a long time ago when I had the game. I recall a blown fuse under the playfield and something with the relay (small cube that switches the power on to the flippers) also under the playfield.
I think the wire gate in the upper playfield triggers the relay to turn on the upper flippers. You should hear a click when the relay kicks in if it's working. I always thought it was great the upper playfield flippers were controlled and not always on except when the ball goes up there.

Can't help with the score issue. Does the game score at all? Do all 4 players coin up? Sounds like the memory is messed up which could be ram. Was there battery damage?

Just an idea to make sure the upper flippers actually work. Why not bypass the relay temporarily and hook the flippers up direct. This way you can test the flippers work and then you know fr sure it's a bad relay. That's what I ended up doing on one of my zacs (I forget, I think it was pinball champ).

PRICE ESTIMATE
We have seen this game for sale in the Pinside Market once. The asking price was $700

So anywhere from $800-$1200 tops for a nice working one?
Its out of the enjoyment of the game that we fix and restore these games. They are great playing games that just aren't worth a lot (besides a few hard to find ones). Soccer kings, Devil Riders, Magic Castle all good cheap fun.

This is the EM backglass that should have been on your game. Maybe it broke in Italy at some bar and they grabbed whatever they could find...

http://www.pinrepair.com/wanted/zac_skijump.htm

Whatever someones willing to pay? Import EMs usually go for around $600 if fully working.

Wow that is amazing. I tried for 6 years to find 1 Spooky. I gave up. Hope the other 4 go to other people that love the game.

Did that resolve your matrix issue? Do all switches work now? I'd love to see a gameplay vide when you get it running. This title always eluded me.

Here is the datasheet for BC548:
https://alltransistors.com/transistor.php?transistor=23407

A cross for BC548 is here, maybe you have a substitute (I don't see 2n2222 as a cross):
https://alltransistors.com/crsearch.php?mat=Si&struct=NPN&pc=0.5&ucb=30&uce=30&ueb=5&ic=0.1&tj=150&ft=300&cc=6&hfe=110&caps=TO92

English speech roms too. First I heard it in English, nice. Nice to see the gameplay, thanks!

I forget is there a small pot on the sound card that allows pitch adjustment? I remember a volume adjust but maybe there is s pitch adjust too. This one has the 2 sound cards (main and daughter)

Translucent red flippers with dark red rubber. That's how they are displayed on the flyer and two I have had were like that.

Value? Not much unfortunately. This is a low cost zac (gen1) in working condition. In unknown condition with a trashed playfield, it would be best to get working and just enjoyed as a player. You don't see many locomotions but its not as fun as the gen2 games (IMO).

10 years ago we used a backup memory cap instead of the pinintech nvram (which wasn't created). Simple solution and scores/settings were retained for months without play(although I never had a game I didn't play for months). I installed this in place of batteries on all of my zacs.

Backup cap onboard not remote battery would be cheap and easy to install and last Forever

Amazing work! You have just saved a bunch of generation 1 machines. Well done!

It looks great thanks for taking a video! Someday I hope to play one!

If I recall my Magic castle had the same legs as the other gen2s (soccer kings, pinball champ and farfalla I had next to magic castle). They all lined up in height and i had no problem with it seeming floaty or anything. I think it was around 6.5 pitch. I'd bet you have the wrong legs.

See if you can get it running before worrying about the playfield.

Not necessary. The clear coat on the Zaccaria games is super durable. Clean it up and you’ll see

Nope - these are 6 digit

You need the Italian speech Roms. If I recall d. Gersic can burn them for you and a few others have the capability.

I agree swapping out the bad display with a working one would be a good test but remember the displays are numbered by jumpers on the display. You have to set the working display to the correct number and then install it. Never do any work on the game with power on,you will destroy the displays. I'd be inclined to take the player 4 display and change the jumper to the BIP display to try it. If it works I'd probably just move the BIP to player 4 after changing the jumper and leave it for now Until you find another working 8 digit (very hard to find) or swap them out to 7 digit (again hard to find unless you buy new led types someone was making)

Maybe you could use something different than the spring retainers. THese are also used as supports for neon tubes and these are univeral.
https://www.theneonsignguystore.com/product/neon-tube-supports/universal-tube-support/

check the fuses on the power board and under playfield (if I recall there are some fuses under the playfield).
its very good the game starts, thats over half the battle.

there are some troubleshooting tips here if you want to get it running.
Its a bunch of reading but if you are going to own zacs you have to understand them.
You are lucky there are replacement boards and displays available but not everything is available so learning to troubleshoot will help if you have an issue.

http://www.pinrepair.com/zac/

Change stuff thats broken, leave anything thats working alone! You don't want to go over these games and attempt to bulletproof them.

Maybe D Gersic has some left over tops and wings when you made them? If I recall he made red and blue.

StarGod is my favorite gen1. EWF left the zac collection in 4 weeks, though it was beautiful.
IMO StarGod has great pinball action, lots of bouncing, dual spinners that are super fun to hit and simple rules that are hard to master.
Just a really great game. It was the last gen1 for me to sell before diving into the gen2s

hard to find. You can substitute according to D. Gersic on his site. Might find these easier or maybe you have a spare in your toolbox:
http://www.zaccaria-pinball.com/misc/index.html

Main Flipper (Baseplate) D.50 S.600 / D.14 S.5000 Tan 3.5Ω / 480Ω Custom 24-600/35-5000

Blue? No zacs used Blue Displays...

Zacs are reliable once you get them working. Don't worry about coils, you rarely need them unless the game is partially parted out. I don't know of anyone making drop targets. If the magic castle is fully working I would get it. It's a fun game.

If it's not working, prepare to roll up your sleeves and do board work. Recently some boards have been reproduced which helps alot, and a version of the displays has been released. Displays and boards were hard to work on and no replacements were available. Sound boards are still impossible to find and difficult to fix though if it working you should be ok. Missing parts are the biggest issue so hopefully your game is intact.

More people are interested in the zacs than ever and post to this thread so you'll also get help if you need it.

perhaps this isn't working since the zeroram conversion didn't work.
http://www.zaccaria-pinball.com/gen2/cpu-zeropower.html

Can you reverse the FM1680 conversion and use a backup memory cap instead for the battery, then try the roms? I prefered the backup memory cap for all my zacs when I had them. it was an easy way to go batteryless.

I did the same. Just glue it and enjoy your game. I used a thin acrylic backing because mine was in 4 pieces. You might get lucky just gluing it.

Spinner should be hooked to a switch. It scores and has sounds associated. It has rules in gameplay.
http://www.zaccaria-pinball.com/rulesheets/pinballchamp.html

http://bgresto.com/?p=2586

Problem with the translite is you need the masking layer that masks out the numbers/sections that are not lit. I worked on a few of these and had one of them printed on translucent film (2 prints). It wasn't great but better than nothing since I could not find a ROBOT backglass anywhere.

I was able to find a Pinball Champ backglass for second game without a backglass years ago but those days are gone now, plus it took me 6 months. Maybe you can find one in AU to lessen the cost/shipping? No substitute for a beautiful backglass for these games though. Worth the $700 IMO if that was my only option and a brand new glass would be something to really admire.

Space shuttle is a gen 1 zac, so maybe 1200 in good shape. Horror though is a conversion kit for space shuttle that I’ve only seen on ipdb and never in the USA. No idea what it would cost but I’d like to play the converted game since I don’t like space shuttle

Start first by removing the black mold from the game. This is hazardous to your health so wear a mask/gloves and have ventilation.
Once your game is devoid of the mold and spores, start here:

http://www.zaccaria-pinball.com/gen2/repairs.html (specifically powering up a game for the first time)
and
http://www.zaccaria-pinball.com/how-to/index.html

I've had them all (except spooky and clown).

Magic Castle, Farfalla and Pool CHampion I'd pick from these 5. Pool Champion is a bit easier than the others, but the pop up ball targets are great fun to hit and sneaking the ball past the open top flipper to get the 8 ball is neat. I didn't care for Time Machine and only saw Clown once but it looked like a snoozer.

Yes the New Stars Phoenix power board is slightly different. David explains the differences on his site. Scroll to the bottom

http://www.zaccaria-pinball.com/gen2/powersupply.html

Been a long time since I had Devil Riders but I recall there is a bar behind the left and right targets that prevents the ball from going under the ramp when its up. THis bar drops when the targets drop and the large posts drop lowering the ramp on either side. the manual is on ipdb.org if you don't have one (its just jpgs so print it as pdf if you want it together)

knockers? are you talking about the pop bumpers? it sounds like you need to adjust the pop bumper spoons/switch so they are more sensitive to fire the switch to pulse the pop bumper and ring pushes the ball away.

led tube is very bright but you can wrap it in printer paper (single sheet) and it mutes the lighting nicely. or 2 sheets if you want it dimmer. It sounds like you are going another route anyway, but if you find a longer led tube it could work.

You’ll need to find a 1b1125 sound card. They were used in several early gen 1 games so look on eBay daily or set a search internationally and eventually you’ll find one from a parted out game.

If I recall Spooky had 2 sound boards - the main board and an add-on daughter board. Maybe check the connection/ribbon cable from main sound board to daughter sound board. Isn't there a button you can press on sound card to hear a test sample? good luck!

I really don't think it has anything to do with your sound roms. T

Maybe try adjusting the 3 potentiometers for sound on the spooky sound board? There are 3 I see that handle different parts of the sound (probably pitch, effects, voice). They look like 3 wheels with a dial in the middle (slotted screwdriver if I recall can turn the dial). Just wiggle left and right and see if the sound changes, but revert the dial back to its initial position.

And with the game OFF, try to reseat the ribbon cables from 1B11181/1 (top board) to bottom sound board. then turn it on and see if that helps.

If the coil works but it’s weak perhaps it’s binding. I’d check the physical mechanism. Perhaps the sleeve is worn and the plunger is dragging. Coils heat up and bind too around the sleeve. Might have to replace the sleeve or coil.

http://www.zaccaria-pinball.com/gen2/index.html
See powering up a game for the first time

Maybe play with the SW3 and SW4 switches in the upper right of the soundboard. Maybe you can at least get some sound working properly.According to D Gersic.

SW1
Hooked to the processor Interrupt line. Normally "off". When switched "on", causes the processor to start a self test sound loop where it will play a bunch of sounds one at a time until the board is power cycled.
SW2
Not connected. Does nothing.
SW3 / SW4
Additional Data input lines. These can be used to select alternate sound effect sets. For each sound effect the game can play, there may be alternates available in the ROM on the board. Not all games using these boards support them. Of the two I tested, Earth Wind Fire ignores these, and Locomotion seems to have three full sets of sounds available.
SW3 SW4 Sounds
off off Set one - basic bings and boops This set reminded me most of early Williams System3 games like World Cup and Hot Tip.
on off Set two - electronic sounds This set reminds me of Williams games like Firepower and Defender.
off on Set three - more electronic sounds
on on No sounds at all
Schematics Error: The 1B1146/2 schematics show two different parts as "IC12".

So with SW3 and SW4 ON and the other 2 selecters OFF you still hear sounds? This is supposed to turn off all sounds.
If you still hear interference, perhaps a bad ribbon cable on sound card at CN1?
I see a potentiometer at J70 that can be adjusted. Maybe turn that a 1/4 turn to the left and then right and see if it clears up the static?

Gametime bonus on the third ball of gen2 games should count down and stop when the ball hits the trough, gets put back into play and count down continues to go down. rinse repeat until timer is 0 and flippers freeze, ball drains and game ends. Maybe a setting in the rom needs to be changed? Setting gametime bonus in setup #31 should be 01. Aside from that I can't see any other setting that matters. maybe set it to 00 to turn off game time bonus and see if the game ends correctly then flip it on again and see what happens.

There is a drive belt that spins the motorcycle. I recall seeing this before and searched for a solution, hope it helps you:

"For the drive belt on Devil Riders, head to the hardware store and ask for a #38 o-ring. Looks to fit perfectly without too much tension, drives my bike fine. If that's not tight enough, can also use a #25 but wasn't sure if it was too much tension. Should be able to grab both for under $2.00 total."

For all of my gen 2 games I used a backup memory cap. Super simple. You can get these from amazon too.

From Dave Gersics site:

To replace the original battery, a 1F 5.5V computer memory backup capacitor like Jameco P/N 142957 or Mouser P/N 555-1.0Z5.5 can be mounted on the CPU board in place of the battery pack and short leads used to connect it to the battery (+) and (-) traces...