Atari Middle Earth...Repair Log (Complete, Working 100%)

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trueno92
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Re: Atari Middle Earth...Repair Log (Complete, Working 100%)

Postby trueno92 » Sat Mar 25, 2017 7:52 am

Interesting find last night.

I noticed a leg was pulled up on an ic off the mpu. I hadn't had a chance to jump it back as I don't want to bend the leg back down in case it breaks off at the housing.

Does anyone have an mpu that can reference this area and report back their findings? I don't think it will fix anything BUT its odd and Ken didn't take notice of it either however it does look like a production line mid run factory hack...

I suspect it's just a timer ic anyway..

https://imgur.com/gallery/0slDj

Also:
Green wire going off the psu in the 12 pin harness seemed to have fallen out of the harness and I reseated it. Looks to provide power to the lower cab slam switch.

Result: no change.

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Coitusmysterioso
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Re: Atari Middle Earth...Repair Log (Complete, Working 100%)

Postby Coitusmysterioso » Sat Mar 25, 2017 8:02 am

Silly question.

I'm sure you've already checked fuses but have you actually verified that all the boards are getting the powers and grounds they are supposed to? Only reason I am asking is if it was me I would TOTALLY forget about what the last guy did and start from basic step 1 on this thing so I would be 100% sure of my findings.

I have seen too many people make assumptions when diagnosing electrical circuits only to waist many hours running in circles.

trueno92
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Re: Atari Middle Earth...Repair Log (Complete, Working 100%)

Postby trueno92 » Sat Mar 25, 2017 11:49 am

Power. NOPE.

but that is going to be what I will investigate, today.

I unplugged the aux board from the mpu and started the machine and the behaviour is exactly the same as when its plugged in, so that leads me to think the aux is dead or something is preventing power to it... which kinda lines up with a prob being a draw somewhere from the aux...

Will report back.

trueno92
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Re: Atari Middle Earth...Repair Log (Complete, Working 100%)

Postby trueno92 » Sat Mar 25, 2017 6:06 pm

OMG!! when ken thru his hands up, he really thru his hands up..

IT WAS JUST A FUSE!!!

GOT SOUND AND LIGHTING!! STILL NOT GOING INTO READY.

MORE SOON!!!


trueno92
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Re: Atari Middle Earth...Repair Log (Complete, Working 100%)

Postby trueno92 » Sat Mar 25, 2017 10:23 pm

Playfield is up, backglass is up - stupid mistake, pulled a fuse from the 115v ac socket, didn't realize till later it also controls the backglass..

Don't know why it won't coin. No noise on switch test either, harness looks good, so do edge connections... Wishing it was a fuse here for this too....

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Azatotht
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Re: Atari Middle Earth...Repair Log (Complete, Working 100%)

Postby Azatotht » Sun Mar 26, 2017 8:34 am

Keep it up, fun read !

A fuse fix is always encouraging ;-)
I am the monster that breathing men would kill.
I, am Dracula...

trueno92
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Re: Atari Middle Earth...Repair Log (Complete, Working 100%)

Postby trueno92 » Sun Mar 26, 2017 8:48 am

Ok guys,

Broken stuff score is still "0"

I see a reset pad marked clearly on the board but don't know where the switch is. I also read about people resetting these Atari MPU but I don't see how...or where is the switch is???

Ok other than that I have reduced that there is either a problem with the coin door switches circuit.. as all coin door switches do not register even in the switch test...

But even if this were the case, shouldn't the machine be in game over mode or cycling the 1up,2up,3up,4up display? As the game is not getting to this mode....

It's like its waiting for something to bump it along, so I tossed some tissue into the ball out hole to try and get the machine to think a ball is there, ready for okay but no dice.

I have no idea what it wants but the coin door switches for sure are posing a bit of an issue however I havent read of this preventing the game from booting..

Here she is in all her fancy-decorative lamp status, Image

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Azatotht
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Re: Atari Middle Earth...Repair Log (Complete, Working 100%)

Postby Azatotht » Sun Mar 26, 2017 9:16 am

Very nice decoration :mrgreen:
I am the monster that breathing men would kill.
I, am Dracula...

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Coitusmysterioso
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Re: Atari Middle Earth...Repair Log (Complete, Working 100%)

Postby Coitusmysterioso » Sun Mar 26, 2017 8:23 pm

Dude go get a pinball already LOL.

They are less than $2.00 at Playdium. Could you imagine if you were able to get everything working one night and didn't actually have a ball to play a game.

THAT WOULD SUCK!!!!

Keep checking the basics step by step. Did you download the manual, wiring schematic and all the other documentation fro IPBD yet?

http://mirror2.ipdb.org/files/1590/Atar ... Manual.pdf

http://mirror2.ipdb.org/files/1590/Atar ... matics.pdf

http://mirror2.ipdb.org/files/1590/Atar ... 1_of_2.pdf

trueno92
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Re: Atari Middle Earth...Repair Log (Complete, Working 100%)

Postby trueno92 » Tue Apr 04, 2017 11:44 am

Anyone here know what a good home use dip switch setting?

what would be good dip settings for home use? I have looked at a handful of atari pins on YouTube and noticed in attract mode, 1up, 2up, 3up, 4up scroll through. I don't see that with my Middle Earth?
It does start and play 4 players as per manual but not seeing the scroll. If I play a game with 1-4 players it will scroll through the most recent scores in attract.

Ideas, or suggestions?

Oh and I did a haul video, feel free to check it out.

https://youtu.be/VNEIYiWb20w

First look video coming prob next week.

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Azatotht
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Re: Atari Middle Earth...Repair Log (Complete, Working 100%)

Postby Azatotht » Tue Apr 04, 2017 11:51 am

So it is working now ?

Congrats :-)
I am the monster that breathing men would kill.
I, am Dracula...

trueno92
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Re: Atari Middle Earth...Repair Log (Complete, Working 100%)

Postby trueno92 » Tue Apr 04, 2017 12:03 pm

I want to say, almost. ;)

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sylvain
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Re: Atari Middle Earth...Repair Log (Complete, Working 100%)

Postby sylvain » Tue Apr 04, 2017 3:21 pm

Just curious, and to close the repair log with useful info for others:
- what were the actual last issues and what did you do to fix them?

Thanks,
- Sylvain.
Looking for Bally Star-Jet, Capersville or The Wiggler, Williams Grand Lizard, Swords of Fury, 1986 Pinstar Gamatron, and a few others.
Collecting & repairing electro-mechanical and solid state pinball machines with quality and care for over 35 years.
Serious and fun hobby, powerful nostalgia !

trueno92
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Re: Atari Middle Earth...Repair Log (Complete, Working 100%)

Postby trueno92 » Thu Apr 13, 2017 6:59 am

The fix:

Red wire going from coin trigger was cut.

Reconnecting that got it to coin up,

Made a recording of it
https://youtu.be/Ep4DNENdJE8

Thanks for your help guys!!

I think the original issue was cables being connected wrong, blowing the 7414s on the mpu, ken replacing them and then somehow a wire on the coin door got cleanly cut. Not sure how that happened but it was way easier to splice up that wire than to hunt on the aux board!

trueno92
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Joined: Thu Mar 23, 2017 10:06 am

Re: Atari Middle Earth...Repair Log (Complete, Working 100%)

Postby trueno92 » Tue Apr 18, 2017 6:55 am

Just a follow up as now the table is working...

1. Tightened up all the screws holding anything on the underside of the playfield,
2. Adjusted all the flipper bats, noticed that some dont go down flush into the linkage off the solenoid. Noticed the plastic sleeves/collar/guide that holds the flipper bat has cracked on the right side flippers - perfect job for some hot glue and have those all sealed up and guiding the bats nice and straight.
3. Left side drop target bank occasionally has a target or two that falls on reset. Scores accordingly. Bent the target holder a bit and adjusted spring tension - will keep an eye on this.
4. Adjusted all switches for high sensitivity on contact, slingshot, bumpers, etc.
5. Adjusted spinners
6. Tried to center the plunged, doesn't have a lot of room to recenter...
7. Triple thicked the backglass back side.

I think that's everything for now. I have glass coming in and a metal shop that is working on a custom stainless lockdown bar. I also made arrangements to have a head in good condition come in from a cgcc member, subpacket. So I will swap the glass to that head.

Bulbs and new buttons picked up from playdium and 7 leds. I know ataris don't take well to led since they have some voltage fluctuations in an effort to prolong bulb life, but I think I can get away with a few in random GI areas before it starts going bonkers.


She's coming along nicely and I find I can waste an hr playing this or an hr screwing with adjusting something...

trueno92
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Re: Atari Middle Earth...Repair Log (Complete, Working 100%)

Postby trueno92 » Mon Apr 24, 2017 4:08 pm

Leds seem to be doing well in gi. Didn't shotgun it but tried to place them where it tastefully made sense.

Check out my portraitmode gameplay video, 60fps!

https://youtu.be/geh9pIlJnQ0



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