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AskJacob
21st December 2008, 10:04 PM
Finally got started doing _something_ with my new machine.

Picked up a the Magic over a week ago, and haven't even really had a chance to even take picks till now.

She's definately a project, but to stay positive, here are the GOOD things so far found:

- The cab art is in really good condition
- Every plastic is there, and no cracks or anything
- All the mechanics seem to be there and in nice condition
- The underside of the PF is the cleanest I have seen in ages
- No sunken inserts
- Very little PF wear (a little above the left flipper , and minor bits around some inserts)
- No mylar! Well, apart from the little pop bumper rings, and they are intact and not trapped dirt under them

Now for the "needs attention" side of the project:
- No boards in the head at all - I have arranged for a PDB, and I have a dead MPU to work on. Just need to hunt down an SB-100 sound baord
- Legs have no levellers on the front
- Rectifier board is hacked and a resistor has a leg corroded off
- PF needs a massive clean - dirt and ballswirl present
- Beehive plunger assemble looks tatty
- Backglass starting to flake
- no PF glass
- no lockdown bar
- some missing rollover star inserts
- more to come I'm sure :D

I'm also confused about the lockdown assembly and bar. It has a lockdown assembly that looks like a bally one - e.g. it accepts the tabs on the lockdown bar, as opposed to the round headed bolts as on my other stern...

Well, to pre-empt, here are some pics:

The hacked bridge board:
http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC03665.jpg


PF wear from flipper and the nackered flipper:
http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC03668.jpg


Skull bumper caps (neat match with the dracula red skull caps):
http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC03670.jpg


No wear near the kickout hole:
http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC03672.jpg


The only cab damage:
http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC03677.jpg


Lockdown assembly and plunger:
http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC03680.jpg


The usual hacked in credit button:
http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC03681.jpg


So much to do, I'll keep you posted :D

Cheers
Jacob

Just saw the copper wrapped around one of the fuses in that pic - don't panic guys. power isn't going near this for a while yet!

Fish Tales
21st December 2008, 10:17 PM
looks like magic eraser time!
:)

AskJacob
21st December 2008, 10:22 PM
oh yes indeed. Bought some on Friday. Still haven't unwrapped them yet...

Cheers
Jacob

Arcade King
21st December 2008, 10:36 PM
cant wait to see how it comes up mate :)

DKong
21st December 2008, 10:43 PM
Should be a winner. The dirtier the better, the instant satisfaction is awesome:D

rod71
21st December 2008, 11:11 PM
I can help with a lock down bar. However, it will need a little welding on each end. I will post a pic tomorrow :)

Ford Fairlane
21st December 2008, 11:13 PM
sweet!!! keep those resto pics coming. ( i need all the help i can get) :evil

Ballywannabe
22nd December 2008, 09:13 AM
I'm also confused about the lockdown assembly and bar. It has a lockdown assembly that looks like a bally one - e.g. it accepts the tabs on the lockdown bar, as opposed to the round headed bolts as on my other stern...



Lots of work there for you Jacob;) Stern changed to the 'tabbed' lockdown bar sometime in 1979, so any bar from a later Stern (except widebody) will do the job. Unfortunately a Bally bar won't fit.

Good to see the usual hacks in the power supply:o

cheers
Ian

AskJacob
22nd December 2008, 09:22 AM
Lots of work there for you Jacob;) Stern changed to the 'tabbed' lockdown bar sometime in 1979, so any bar from a later Stern (except widebody) will do the job. Unfortunately a Bally bar won't fit.

Good to see the usual hacks in the power supply:o

cheers
Ian

Ah thanks, still learning every day. So, a late 79+ Stern lockdown bar is what I need to chase down, thanks!

Yeah, the soldered wires to the pins are "chaining down" the playfield so I can't walk off with it yet :D - my guess (by the burnt pin) is they have some GI wiring there in that connector.

A big rebuild on the way for the bridge board - here's hoping there's no lifted tracks on the PCB...

Cheers
Jacob

rod71
22nd December 2008, 09:39 AM
I've got one that needs a little welding on each end. Buggered if i know how it happened. All i can think of is some newb couldn't figure out how to get the glass off, so started hacking into the lockdown bar?.

Apparently a tig welder will do the trick.

AskJacob
22nd December 2008, 09:44 AM
I've got one that needs a little welding on each end. Buggered if i know how it happened. All i can think of is some newb couldn't figure out how to get the glass off, so started hacking into the lockdown bar?.

Apparently a tig welder will do the trick.

Ooops I somehow missed your previous post :redface

I should be able to get that welded - I'm keen on it, thanks!

Cheers
Jacob

waylander
18th January 2009, 08:29 PM
Hey Jacob,

thought this auction maybe of some use to your project?
http://cgi.ebay.com/Used-BOARDS-for-Magic-Pinball-Machine_W0QQitemZ250358718029QQcmdZViewItemQQptZLH _DefaultDomain_0?hash=item250358718029&_trksid=p3911.c0.m14&_trkparms=72%3A1205%7C66%3A2%7C65%3A12%7C39%3A1%7C 240%3A1318


Cheers.

AskJacob
26th July 2009, 07:32 PM
So, I have been slowly gathering some parts for this project over the past 6 months (already? bloody hell).

Each time I get started, the MPU board keeps putting me off... I know I can always get another one, but I really do want to try and get this one going.

Attached are some shots of what I have to work with here. Almost all the craptacular sockets have been removed, but other than that, no cleanup other than the vinegar rinse has been done.

Its times like these I wish I had a bead-blasting rig, would make this job a lot easier. Oh well, hard yakka and a fibre glass pen instead...

Here is some of the horror :)

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04519.jpg

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04520.jpg

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04521.jpg

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04522.jpg

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04523.jpg

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04524.jpg

Cheers
Jacob

Ballywannabe
26th July 2009, 07:54 PM
Jacob - I would STRONGLY advise you to find another board. That one looks too far gone to be worth fixing, and there are plenty of boards on ebay that would be a much better proposition. Even if you get it going, unless you clear all the corrosion it is likely to be unreliable.

If you keep at it I will be interested to see if you can get it going...

cheers
Ian

AskJacob
26th July 2009, 08:15 PM
Jacob - I would STRONGLY advise you to find another board. That one looks too far gone to be worth fixing, and there are plenty of boards on ebay that would be a much better proposition. Even if you get it going, unless you clear all the corrosion it is likely to be unreliable.

If you keep at it I will be interested to see if you can get it going...

cheers
Ian

Thanks, I know, I know. I already chickened out on this board for my Drac, so what the hell. This way I know if it does not work I can frisbee it and not have it wasting storage space. Replacement boards are not too hard to come by, plus looking t the other stuff I need to do yet, the MPU is not urgent at this stage...

Yes it is a disaster board, but hey, trying to get it running is better than what is on TV tonight :D

Cheers
Jacob

Skybeaux
27th July 2009, 09:30 AM
Bit of a rough looking board there Jacob , but it's not beyond it.
I've fixed a few like that before and i don't envy the job you've got ahead of you.
Just take your time with it :)

Let me know if you need any bits as i've got every single part that goes on those boards

AskJacob
27th July 2009, 09:57 AM
Bit of a rough looking board there Jacob , but it's not beyond it.
I've fixed a few like that before and i don't envy the job you've got ahead of you.
Just take your time with it :)

Let me know if you need any bits as i've got every single part that goes on those boards

Thanks mate. Got any PCB pads?:lol

Should be OK for parts at this stage. Mainly a lot of nice new machine sockets and new connector pins, the old ones look like twisted black arthritic fingers. I grabbed the corrosion kit from GPE a few years ago (and a bunch of replacement pins), it does not have all the parts I'm going to need but the rest I can scrounge up from my parts boxes- I hope :)

After getting the last few sockets and all the pins out, it is not looking so bad now. Maybe 20 damaged tracks, Lots of damaged pads though. Many of the missing pads are "go no-wheres" on the back side of the PCB (the easiest for "hacks" to damage of course!) so should be possible to do.

One thing I do notice, is that working on a corroded board like this is VERY hard on your solder tip. I have a new one I recently put in, I wish I left the old tip in for this job.

I'll keep the thread updated as I progress...

Cheers
Jacob

stuba
29th July 2009, 10:21 AM
geez. not many could get that going jacob but i'm betting thats why you're trying :) good luck. did you sort a lock down bar? I have one in xlnt condition that will do the job (its a spare) - only problem is that its black. it seems to have been professionally enamelled..

AskJacob
29th July 2009, 11:13 AM
geez. not many could get that going jacob but i'm betting thats why you're trying :) good luck. did you sort a lock down bar? I have one in xlnt condition that will do the job (its a spare) - only problem is that its black. it seems to have been professionalyl enamelled..

Kind of, it is in Limbo at rollerball's place. Our paths have not crossed since, so the poor guy still has it in his garage. Black eh? that's a weird colour for that era!

With the board... well I'm off to Altronics at lunch to grab a few bits - like new dip switches (I doubt these old ones are reliable anymore).

Finally moving from "strip" phase to clean, repair and populate...

Cheers
Jacob

AskJacob
30th July 2009, 11:29 PM
OK a little update, with a "How I do it" - not necessarily the best way, but it works for me and my current tools.

Now, to remove the molex pins, remember the #1 priority is the board and the tracks, so you need to minimise the stress on the pcb. Without fancy desoldering gear, this is what I do...

With (not your best pair, this is hard on them) side cutters, cut the plastic strip base into small pieces, while they are still on the PCB. The you can easily slide the pieces up off the pins: (pic shows me 1/2 way through one). For IC sockets, you need to figure out how to remove the plastic frame and leave the pins behind. This board had 4 different types of sockets, and each one needed a different way to fiddle about to pop it off. For ICs on the PCB, just cut the legs off the body then desolder. Much easier as well as less stressful on the PCB.

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04525.jpg

Then you can use tweezers (pliers are ok but suck the heat away from the iron) grab each pin and heat the joint from the top side and slide them out, one at a time. To make this much easier, I use a paste flux I bought a small tub of from deal extreme. less than $5 and will last for years.

Once you have all the pins out, it may look like this:

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04526.jpg

The next step is to clean the pads. If they are bare copper that is tarnished like these, a fine grit sandpaper, or extremely careful scaping with a hobby blade back to shiny copper is needed. Next is to tin and flood the pads with fresh new solder:

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04527.jpg

Be quick and gentle with the heat. If the solder won't flow, then stop and re-clean the pads. More heat will not fix it, it will peel up the tracks.

Finally, you remove the excess solder with a sucker-pen. I prefer the pen over braid as you need a lot of heat to use braid. Check the back side and repeat...

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04528.jpg

In that picture you can see the left over flux on the PCB. That's ok, once we have removed all the crappy sockets, pins and components a good scrub with isopropyl and a nylon brush will have it clean and ready to re-populate.

Here are some areas that cleaned up well:

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04530.jpg

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04533.jpg

Here are some that are going to need work before components go back:

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04531.jpg

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04532.jpg

Those bad areas are in the main corrosion zone, and have had previous heavy handed work done on them...

Coming up next: Cleaning the PCB, and starting track repairs. Oh, and find out why I had to buy nail polish :D

Cheers
Jacob

stuba
31st July 2009, 09:54 AM
nice work and good tips :)

Skybeaux
2nd August 2009, 08:29 PM
Looking good Jacob :023:

AskJacob
9th August 2009, 11:31 AM
Lets take a small tour of the playfield. So far untouched other than removing the plastics.

Found that the right sling had been cracked, and repaired with a chunk of grey aussiduct and epoxy :realmad:

All these pics were taken in patented "swirl-O-cam" - a special process that makes the playfield look 10 times worse than the naked eye (low light and a 6 second exposure!) - and a huge depth of field to get those "coffee table book" pictures...

Shoot again - centre above the flippers

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04539.jpg

Pop Bumpers - oh, and do I spy a piece of a cable tie?

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04541.jpg

Left targets and Spinner:

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04542.jpg

MAG inserts above the rollover lanes:

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04544.jpg

Damn snakes...

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04546.jpg

Nudie butterfly girl:

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04547.jpg

Angry Serpent

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04549.jpg

Skull = death at the right outlane:

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04550.jpg

Overall View of the centre of the playfield:

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04551.jpg

And here is the worst the playfield has - some minor planking:

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04548.jpg

I had the camera out to document the post layout prior to stripping, and though I'd have some fun!

Cheers
Jacob

AskJacob
9th August 2009, 04:04 PM
Before and after:

While not fooling anyone that this is an "as new" pcb now, it should be ready to go a few more years now. Just need to pop in the ICs and start testing. And probably need to get an IC or two from Ken too :)

Before:
http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04519.jpg

After:
http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04564.jpg


Before:
http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04521.jpg

After:
http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04565.jpg

Before:
http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04522.jpg

After:
http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04566.jpg

Before:
http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04523.jpg

After:
http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04567.jpg

Before:
http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04524.jpg

After:
http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04569.jpg


Cheers
Jacob

David_AVD
9th August 2009, 04:24 PM
You certainly do have patience Jacob! :D

Pash
9th August 2009, 04:53 PM
Very nice work there Jacob. Huge improvement over the original condition the pcb was in, very inspiring.

Excellent photos as well, care to elaborate on your equipment and methods a little. Maybe in a seperate thread so that the rest of us can come up with similar pics. As they say a picture is worth a 1000 words. Your pictures speak volumes.

Thanks for sharing mate.

Skybeaux
9th August 2009, 06:14 PM
An absolutely fantastic job you've done on the board Jacob :023:
I can see many hours went into it and am sure it will be reliable and last a very long time now .

Well and truely worth the effort!

pieces
9th August 2009, 07:44 PM
I can see why you didnt want to just replace it any one can do that . It takes skill to do repairs like that . And your reward is the satisfaction .

Great work


Ps This probably a Kindly reminder to check the batteries if you dont want this to happen to you .

AskJacob
9th August 2009, 09:03 PM
Thanks for the comments guys, glad to see people are interested! I have a not-so special camera - but if I can find the mrs' camera I will show how I use mine :)

A few more pics for today...

Here is the rebuilt rectifier pcb. A tip here is if you use the 35A bridges, you can replace them on the right side (the back) if you use longer standoffs for the PCB. The original bolts still reach through to the metal plate (just!) - and yes, I am missing one bolt here (and the fibre washers)... You can also see in the lower right a molex connector so the rectifier board can be removed without having to desolder the transformer wires...

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04570.jpg

Here is a little suprise, a burnt knocker. Luckily I have a rebuilt PDB so I won't have to figure out why :)

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04571.jpg

Here is a nice surprise - this has to be the cleanest under-side of a playfield I have EVER seen! what a contrast to the top side!

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04574.jpg
http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04573.jpg
http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04572.jpg

I mean look at this lamp socket - all my other pins are much more crappy looking - this is like new!

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04575.jpg

And just a fine coat of white corrosion here:

http://i219.photobucket.com/albums/cc5/askjacob/Stern%20Magic/DSC04576.jpg

Not even filthy fingerprints anywhere :lol

Cheers
Jacob

AskJacob
14th August 2009, 11:28 AM
Got my outstanding MPU parts in the mail from Ken yesterday (woohoo)

Due to a bit of a burn out this week though (up past 2 am 4 nights in a row can do that!), I just was buggered so did a big fat nothing last night.

Tonight though should see if we can get this sucker to boot!

Cheers
Jacob

Skybeaux
14th August 2009, 06:22 PM
Glad the parts made it to you safely Jacob.

Here's hoping it decides to be a good board and boot up without much trouble :)

RaMpAgE
14th August 2009, 07:12 PM
Your an inspiration Jacob with that progress, I am keen to see if it boots.

Cheers

Johns-Arcade
14th August 2009, 07:21 PM
Looking good Jacob. Once it's up and working again you will think all the hard work was worth it :023:

Regards,

Johns-Arcade.

Fish Tales
14th August 2009, 07:28 PM
Nice work Jacob. My Nugent is looking like needing the boards reconditioned, allthough its no where near as bad as your Magic was.

AskJacob
14th August 2009, 09:54 PM
It didn't boot :cool:

I didn't think it would just yet - I never saw the PCB working, so I could have a whole lot of causes.

I have a worker I can sit side by side and figure this thing out - just gotta rig up some wires for the old power supply and get into it.

That and a few more beers.

Updates as I go!

-----------------------

Update #0

LED locked on, no flicker no nothing. Fair enough, at least no smoke too! :D

Railways
14th August 2009, 10:08 PM
Matey - It looks like you've done a mountain of work already. Gotta admire your grit. (still remember my IJ refit last year and you wouldn't leave it until it was sussed) Your persistance with this is no surprise and I doth my hat to you sir. Keep on keeping on AJ.:)

AskJacob
17th August 2009, 10:19 AM
Well, I'd better update even though it isn't very exciting so far.

Finally clicked that I have a bally -35 mpu, not a stern -100, but hey, there is not a huge difference, just surprised it never clicked with me (bally has "square" tracks, where the sterns are "organic" and curvy track). Funny how in your face it can be and you still just don't see it :D

Anyway, she didn't boot. Now that is no real surprise, but still... I found 2 traces I marked down but forgot to repair, so did that. Lets see where we stand right now:

1 - LED jammed on, not even the flicker :(
2 - Reset works fine (needs some 'help' with the PC PSU I'm using as the reset circuit times out quicker than the PSU settles)
3 - CPU is certainly doing "something" - the data and address lines are cycling away, and the VMA is strobing
4 - can see activity on the ROM and RAM busses.

What I do know:

The PIAs and CPU and RAM are fine, a swap with known working parts gives the same symptoms.
My bench rig is fine, the working mpu-100 gives me the 6 flashes (the 7th needs 21v which I CBF setting up - besides if you get 6 you're sweet anyway :))

What I think it is:

It may be the bloody jumpers. Could they be more difficult and weirdly documented?

I may have missed a trace (likely!) - this needs a cool head, which I didn't really have at the time. You need to map out the schematic and probe your way around to make sure everything is connected. To ease the frustration, I moved on to strip the top of the Magic playfield, and rebuild the flippers in the IJ :)

Cheers
Jacob

dmworking247
17th August 2009, 02:59 PM
AJ, have you seen this on ebay? looks like a Magic to me?

http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=300339247635&ssPageName=STRK:MEWAX:IT

Skybeaux
18th August 2009, 08:29 AM
It may be the bloody jumpers. Could they be more difficult and weirdly documented?




You should have these jumpers installed and no others for 2732's in a -35 board.

4-13a, 7-8, 10-11, 9-12, 16a-29, 31-32, 33-35 cut 13-15

At least they're the one's i use and have no problems

I also made sure that the eproms were good in a board here before posting them.

It can be frustrating getting boards to work sometimes , keep at it and you'll get there:)