(Topic ID: 325858)

Space Shuttle restoration - one more problem to solve!

By sidetrackedbrew

14 days ago


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  • 14 posts
  • 6 Pinsiders participating
  • Latest reply 7 days ago by pinheadpierre
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#1 14 days ago

Been working on a full topside restore with hardtop, all new plastics, rubbers and LEDs and it’s ALMOST done. Check out the pics! I have one last major issue that I need to figure out and haven’t been able to find any info on this particular issue either here or at pinwiki.
The machine starts up with normal displays, and within a few seconds the displays all revert to odd numbers only. Obviously this affects scoring, switch testing, and seeing the number of credits. I feel like I’m so close to having this thing done, but this problem is stumping me. I have reseated all connectors multiple times and don’t see anything out of the ordinary on the board. Displays are all new Pinscore displays. Any direction would be helpful!0FD7952D-CF65-4B75-9A7F-0B24373E219E (resized).jpegB22CDCFA-F99F-44C6-A0B4-B90E6E1A22E6 (resized).jpeg9B77F985-AD38-445A-BF35-830293CC79B3 (resized).jpeg4B0EBEA9-E739-4974-8384-1DB78CDD0C5A (resized).jpeg0006E435-D87B-4273-B810-09538C2C6489 (resized).jpegB54BF747-1120-4855-810B-B290A8D404ED (resized).jpegAA22396A-82BD-47AB-BF68-534CBC6331FD (resized).jpeg

#2 14 days ago

Is there any sign of alkaline damage to the board in the lower left side above 1J1, 1J2, or 1J3?

#3 14 days ago

You may also want to consider flipping those tapered rubbers over. When the fat side is down, they tend to launch the ball right up into the glass. Ideally, you want the fat side up if you use a tapered rubber there.

#4 14 days ago

yep sounds like something on the CPU board sending bad data to the display boards. on a side note .... all of that work and you couldn't spend the extra few bucks on new playfield posts, or at least run them through the dishwasher?

#5 13 days ago
Quoted from jscaptura:

Is there any sign of alkaline damage to the board in the lower left side above 1J1, 1J2, or 1J3?

I don’t *see* any battery damage on the board. The batteries are still mounted to the board, but…

image (resized).jpg
#6 13 days ago
Quoted from Xenon75:

yep sounds like something on the CPU board sending bad data to the display boards. on a side note .... all of that work and you couldn't spend the extra few bucks on new playfield posts, or at least run them through the dishwasher?

I cleaned them with microfiber and napththa, but once whatever that white stuff is was wet, it was clear. So I couldn’t see if it was there or not. I’ll clean them again for sure.

#7 13 days ago
Quoted from sidetrackedbrew:

I cleaned them with microfiber and napththa, but once whatever that white stuff is was wet, it was clear. So I couldn’t see if it was there or not. I’ll clean them again for sure.

The white stuff on your star posts is wax. You can get it off better with an ultrasonic cleaner filled with a diluted solution of simple green. Any technique trying it by hand is going to take too much time. If you don’t have an ultrasonic, but new posts. They’re cheap.

#8 13 days ago

Here’s a link to a video of the display during startup and during a ball:

https://vimeo.com/772507260

#9 13 days ago

So it looks correct for a couple refreshes and then goes off the rails. Easy stuff first, how are the connectors to/from the mpu to the master display board?

Did you have this issue with the previous display board before changing to the new one?

#10 13 days ago
Quoted from Xenon75:

So it looks correct for a couple refreshes and then goes off the rails. Easy stuff first, how are the connectors to/from the mpu to the master display board?
Did you have this issue with the previous display board before changing to the new one?

The connector ribbons look brand new; I’ve reseated them several times. I could steal a ribbon out of a known good machine and try that; I bought the machine with the pinscore displays already installed, so I don’t have an answer for that question, and the original displays didn’t come with the machine…

#11 13 days ago
Quoted from sidetrackedbrew:

I don’t *see* any battery damage on the board. The batteries are still mounted to the board, but…
[quoted image]

There is battery damage on the mpu. Keep in mind, a previous owner might have replaced the holder without properly cleaning/neutralizing the damage.

#12 13 days ago

If there is alkaline damage, I would recommend contacting Ed Cheung to repair the board. He has a test rig so can confirm if the board is causing the display issue or the new displays themselves.

#13 13 days ago
Quoted from Xenon75:

If there is alkaline damage, I would recommend contacting Ed Cheung to repair the board. He has a test rig so can confirm if the board is causing the display issue or the new displays themselves.

...plus you'll be able to say that you had an actual NASA engineer fix your game!

#14 7 days ago

Ed is fine but overpriced relative to others.

I recommend Borygard (Rob Anthony, Pinball Classics, http://LockWhenLit.com)

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