Replace all the electrolytic caps , I had great success repairing 2 sets of boards from 2 1970 Sega Jet Rocket games
Sounds were missing or very faint , After the work they were all more than loud enough!
One game the cap lead / leg under the transformer was broken .
I'd check the resistors for correct values if your working on the boards .
good luck

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New caps installed on the sound card .
This board had been broken almost in half ,
and had been glued back together and resoldered in the past

Picked up this Sega "Jet Rocket 1970" , a good road trip and 700km return trip to get thses heavy beast of a game home .
Quite a lot needed to get her running , It had all the manual and scematics inside the door , which was a bonus .
Just the Backglass to restore now .
Really nice effects used in these games , blacklit , rockets shoot down at Targets and flashers pulse when hit is scored , I had to use 12v Led flashers in the end , the old style globes kept blowing , The Leds look 100% better .
A few pics Showing the moving landscape removed from from the game and one taken showing it installed back in the game 'mission completed' with the black lights on for show ...

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A few more showing game lit up .

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Just Picked up a Chicago Coin ( 1971) 'Defender'. 1 WW1 theme , Shoot Bi Planes out of the sky with twin handled machine gun
Here is all the paperwork for the game.
The machine needs a full service, clean and some minor repairs , but i managed to get it to operate , but it's still gummed up atm ,
The game is at a fellow pinsiders atm , due to space issues!
I will be working on this game in the morning . Hopefully i'll report back with good news.
More pics to follow...

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Ask and you shall receive.
Here are some more pics ,
Worked on the game all day , Got her going again after a full service and a few minor repairs ,
All i need now is another of the small Bi- Planes, because one of the planes is broken and has been reglued in the past , but its too brittle the plastic ,
I will have a look for a replacement . I did notice they have Hong Kong stamped on the plastic underside.
Very happy indeed with the game so far , All sounds working but i will replacing the caps on the sound cards when i get it home . also i'll restore and repaint the gun etc

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I have that game here , i could take some measurements of the lens for you if needed , have you tried johns jukes in canada, he could have some
You could possibly try a old Lens from a set of binoculars , there should be a small second lens inside them. with a bit of grinding down it could work, or maybe even a cheap telescope might have a suitable lens ...

Small update on the CC Defender Machine Gun.
I have started to restore the gun parts , Still waiting on decals to be made for the Main body part and Drum.
Parts were sandblasted then repainted satin black and charcoal ,
First pic is the gun before .
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Last pics show the new paint job, I also re did the Red and the White tip on the barrel 'sight'
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Last update on the CC Defender Machine gun,
Some pics of the finished gun .
Gun body and drum were re painted Charcoal , But the photos make it look a bit lighter than it is ..
I had the silver decals made for the box and drum, through a singwriter friend , He applied the decals .
They did stuff them up and print 5 of the same side , instead of mirror image , But i had the correct one made , and ended up with spares.
I cleared over them with a Satin Clear , 3 coats. 1st coat i did was light . Really happy with the results ...

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Thanks guys . nice comments
I've seen so much great work on Pinside ,restoration wise i'm still amazed!
I love seeing any EM games being rebuilt ,restored, repaired and brought back to life ...

Originally it had a clear coat over the paint and artwork and was quite a good job from factory.
But! Paintwork had rust under the paint etc and it needed a refresh.
The Ali handles were almost polished from years of use , I did think of just polishing them up , but trying to get it as close to original , I painted them Satin Black , along with barrel and sights .

PS
If anyone needs the file for the graphics on the CC Defender i should be able to get hold of them for use .
Ralph

Are the rubbers listed as part no's?
If they are , i found a list in the 1972 parts catalog
1" 6051
1.5" 6052
2.5" 6053
3'5" 6054
3" 6056
4" 6057
5" 6058
0 rubber ring 6060
3/4" 6061
1 1/4" 6062
2" 6063
rubber gromment's are 6076,6079,6080,6092
rubber tip 6086...
failing that you might be able to see a size on the old rubbers, use a magnifier, most have the sizes on them .

Re Wild kingdom . I just finished fixing a Gangbusters that had sat for over 20 years . I haven't worked on a Wild Kingdom yet!
so bear with me . pardon the pun .

Try Checking both limit switches on the Croc mech, use a meter on the limit switches .
These 2 switches are NC
Using meter again 'buzz' the make/break switches on Croc relay . I found these can be a tricky to get clean and contacting properly.

Clean the Croc target disc and the Program Unit Disc ,
The Program disc should be on one of the score reels/or credit reel .
If you haven't already Checked and cleaned the score reels
Take the Backglass out , this makes checking the score reels a lot easier,
Gently slide the reel along a few mm's and you can get to the Disc's to clean the wiper/s and disc.

Lastly, check the edge connectors, these can lose connection , Check on Motor Speed Board Pin 10/R-BLU.

Good luck MrArt2u, Its sound like a good game reading Clays write up on his site .

That should be fine , Don't desolder . The switches sound like they are both okay on the make/brake.

Does the Croc move properly , when you hold on the Croc Relay manually?
Double checkThe Croc Target and Hunter Discs
Which way dose the Croc move first , left or right?

I just looked at cab pic , all the units have connectors ,
Try wiggling the Hunter Disc and Croc Disc connectors.as it's trying to work, and even try softly pushing the arm across, Could be a dirty wiper? or the arm binding up .
I did find on the Gangbusters it was mosty connector issues ,Esp the motor speed board .

The reels , Ease the Disc over gentle, They have a springs and clutch washers etc , so they have some give , and you could use the wire or butter knife wrapped in cotton rag and clean the face of discs , use some metho , but with the game turned off : )
Good luck . hope you can get it working ...

Just a question for you ,
If Charlie makes the first shot and then continues to fire all the shots ...
Will the Croc move correctly when Charlie hits it ?
.IE Retreat or move to Home position ?
good luck

RR

Some Coil info. CC 1960's early 70's showing 2 types of Gun recoil assemblies.
and coil Price list from the 1972 Catalog.
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Williams 1963, Beat the Clock Pinball . This chart gives you a idea on sizes and uses ...
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Id say the gun scanning disc needs to be adjusted , loosen the wingnuts under the gun mech , level the gun up as best you can and line the stylus point on to the rivet thats (fifth from left and centre up and down) ,
Ill scan the full procedure from the manual if you like , It involves setting up the rear mirror and linning up certain adjustment marks etc ,
but for now try moving the scanning disc forwards about quarter of a inch , bit by bit , good luck

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The last photo shows the marks i drew on the scanning disc before i pulled it apart so i could restore the gun , as you can see i had to move the scan disc forwards, so it aimed correctly.
The procedure in the manual is a bit confusing i found , But just make sure to give Airplane Crash and score Disc, Mirror Motor Contact plate and the Hit Control Contact Plate a clean.

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Beautiful collection you have . I assume you have restored the Duck hunt as it looks fantastic . I have a set of boards to suit this game if you need something . They are from a wrecked game
I remember playing the rifleman . The Midway Alien game ive never heard of before looks like fun , nice pick ups ...

Doesn't this just use photo resistors? , If that is the case, it wouldn't need to be adjusted , as long as the light beam hits the sensor it should score .
When you say the boards are there, do you mean there is boards mounted under the guns? Or do you mean the boards in the back of the cabinet,
just wondering as I'm not familiar with this Midway game .
I have a Midway Gangbusters and it only uses light sensors , no stylus or stylus board .

Interesting . I wonder if the stylus system is because its a 2 player game , It may be used to see which player has made the hit first ?

The best way should be under the stock , Not exactly sure which screws but the ones near the trigger guard ,
If you can get the stock loose , ease the wire through a little as you lift up the gun , just a few inches , careful of the 2 wires that go to the trigger switch , and then just twist the gun sideways , rest it or support it with a blanket or something .
leave the bottom area alone if you can , so it wont all need re adjusting .

2nd idea , If your cabinet has a hinged lid and you can unplug all the wires?
Take the hinge fixings out and remove the complete gun and lid .
My friend has this game , I can check with him if the second idea will work ...
good luck

Yes 2 of these standard clear 'Cab display hit light' and 'Shooting Gallery hit light' the others are the 2 black lights .
You will need to clean the switches on the timer unit in the headbox , I found its the switches on this that cause the most troubles , and clean the rest of the steppers, reels etc ,
My friends game is missing the original game 8 track and just has a music 8 track fitted , funky mid 70's tunes , seems the music plays a bit slow , but sounds okay .
well done , you will love the features it has , shooting gallery , the ferris wheel has timed shots and the pogo stick man that flashes back and forth across the screen ..

Just the one 8 track , The pew pew sound is from the sound board , Look up Clays repair site , he has the sounds that the original 8 track plays .
That coil is available , They get red hot and tend to burn out . a new coil will be okay , if its just getting used at home , just make sure the slide mech is clean and moves freely

You forgot to Mention that you Re-did the gun metal work paint and re oiled the wooden gun stock , Well done Adrian game looks and plays beautifully