(Topic ID: 244740)

WPC not powering up unless Ribbon cable unplugged


By Allentrack86

3 months ago



Topic Stats

  • 27 posts
  • 11 Pinsiders participating
  • Latest reply 3 months ago by Dmod
  • Topic is favorited by 3 Pinsiders

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#1 3 months ago

Ok, this isn't an easy one and if it is, thank you.

Here is a video that shows exactly what is wrong.

Was playing my fishtales with zero issues and the DMD starting acting funky (not lighting up correctly etc). Problem gradually go worse until DMD only had a few lights ligthing up. Reseated ribbon cables and problem fixed. Bought a whole new set to install. While the cables were on their way, game eventually wouldn't power up.

Got the new ribbon cables plugged them all in (correctly, nothing off a pin or column) and nothing. Realize that when I do not plug in the last leg of the ribbon cable into the DMD controller board game started up, played fine, sounds flipper etc great, minus no display.

Was playing the game without the last ribbon cable installed and then the the flippers ended up not firing and now the start button intermittanly registers.

Took the DMD controller board and tested it in a working slugfest and no issues at all. Display perfect, doesn't not affect game turning on etc.

Bought a new Rotten Dog Power Driver board thinking it was something with the overall power.... NOPE!

So now there is a brand new set of ribbon cables. Brand new power drive board (the big huge board).

What I've tested:

-Tried various combinations of ribbon cables plugged in.

-Tested every single fuse for continuity

-Reseated ribbon cables

-Pushed down on every chip during game on to see if that helped

DMD is disconnected from controller board at this point. All ribbon cables are in except the last one that runs into the DMD controller board from the Audio board. I can't get the start button registering no matter what combination I put.

What is happening that the data from the ribbon cable to the dmd controller board is forcing the game to not power up (lights, sounds, fishing reel spinning)?

#2 3 months ago

Your ribbon cables. Red stripe pin one each end. None off by a row ?

LTG : )

#3 3 months ago

On the power/driver board, lower left, you'll find J116, J117, and J118.
Each connector has the ability to provide 5/12/Ground.
Make sure that all three are plugged in.
Make sure that a wire hasn't broken free from the craptastic OEM IDC connectors.
Report back.
--
Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info

#4 3 months ago

That's the wrong video, BTW.

#5 3 months ago
Quoted from LTG:

Your ribbon cables. Red stripe pin one each end. None off by a row ?
LTG : )

Agree with LTG here. Very easy to be off a column or a row with IDC connectors.

Watching the correct video. It looks like there is a problem with your DMD video board. If you have a similar vintage WPC pin you can swap boards.

#6 3 months ago

Please post a picture of your boards with the new ribbon cable(s) plugged in. Also, where did you purchase the new ribbon cable(s)?

#7 3 months ago
Quoted from Allentrack86:

Here is a video that shows exactly what is wrong.

uhh...no it isn't

#8 3 months ago

How do I delete this thread? I thought putting int in the trash did so. There is another thread with the correct video.

#9 3 months ago
Quoted from LTG:

Your ribbon cables. Red stripe pin one each end. None off by a row ?
LTG : )

Nope, double checked all ribbon cables.

#10 3 months ago
Quoted from skquinn:

That's the wrong video, BTW.

Just posted correct video. Sorry for error.

#11 3 months ago
Quoted from Turtle:

Agree with LTG here. Very easy to be off a column or a row with IDC connectors.
Watching the correct video. It looks like there is a problem with your DMD video board. If you have a similar vintage WPC pin you can swap boards.

I tested the DMD controller board in a slugfest. Worked 100% with no issue and no power up or display issues.

#12 3 months ago
Quoted from PinballManiac40:

Please post a picture of your boards with the new ribbon cable(s) plugged in. Also, where did you purchase the new ribbon cable(s)?

New cables yield same response on as old cables. Marco Specialties.

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#13 3 months ago
Quoted from ChrisHibler:

On the power/driver board, lower left, you'll find J116, J117, and J118.
Each connector has the ability to provide 5/12/Ground.
Make sure that all three are plugged in.
Make sure that a wire hasn't broken free from the craptastic OEM IDC connectors.
Report back.
--
Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact
http://www.PinWiki.com - The Place to go for Pinball Repair InfoWill check in on this in the AM and report back. Hoping it's this lead.

#14 3 months ago
Quoted from LTG:

Your ribbon cables. Red stripe pin one each end. None off by a row ?
LTG : )

I double and triple checked but I might be a huge moron and still did it wrong. Bought all new boards hoping to freaking to get the bottom of it tomorrow morning.

#15 3 months ago

Terrible idea unplugging/plugging in any cables while power is on. This is how some issues start.

Make it a standard practice doing it with power off at all times

#16 3 months ago
Quoted from PinballManiac40:

Please post a picture of your boards with the new ribbon cable(s) plugged in.

I didn't ask for pictures of just the boards. Just like LTG said, you may have a ribbon cable one row off and seeing pictures would help get another set of eyes on it seeing pictures of all the ribbon cables connected.

#17 3 months ago
Quoted from PinballManiac40:

I didn't ask for pictures of just the boards. Just like LTG said, you may have a ribbon cable one row off and seeing pictures would help get another set of eyes on it seeing pictures of all the ribbon cables connected.

I promise you no ribbon cable is off one row or one column or anything. Old cables yield same result as new cables.

Just installed new FlipTronics board. Same exact issue remains.

Rules out
ribbon cables
Dmd driver board
FlipTronics board
Power driver board

Please tell some some connector and wire is botched somewhere

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#18 3 months ago
Quoted from ChrisHibler:

On the power/driver board, lower left, you'll find J116, J117, and J118.
Each connector has the ability to provide 5/12/Ground.
Make sure that all three are plugged in.
Make sure that a wire hasn't broken free from the craptastic OEM IDC connectors.
Report back.
--
Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info

Pics below.

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#19 3 months ago

I had similar issues with Dirty Harry, and I think it was sound board not booting up properly what caused it. Cleaning fuses / fuseholders seemed to fix it. You might try removing ribbon cable from soundboard and see if it boots.

#20 3 months ago
Quoted from Iizi:

You might try removing ribbon cable from soundboard and see if it boots.

Definitely the next step to try.

Edit: With the CPU, Fliptronix and DMD controller connected, bypassing the sound board ribbon cable connection.

#21 3 months ago

Yes please be careful unplugging anything when the game is on. Only takes a second to power off the game and unplug it and power it back on. Youi can kill some Gottliebs this way. Hope you get it fixed, sounds like your on the right tack

#22 3 months ago
Quoted from PinballManiac40:

Definitely the next step to try.
Edit: With the CPU, Fliptronix and DMD controller connected, bypassing the sound board ribbon cable connection.

Thank for the tip. I tried a variety of different patterns with the ribbon cable including the suggested one. It doesn't matter what I leave plugged in or not, the only thing that makes a difference is the last leg of the ribbon cable plugs into the top slot of the DMD controller board.

The new fliptronic board didn't do it. I'm testing the mpu board tomorrow.

#23 3 months ago
Quoted from Allentrack86:

I tested the DMD controller board in a slugfest. Worked 100% with no issue and no power up or display issues.

Are you able to try the Slugfest DMD controller board in Fish Tales?

#24 3 months ago

Also, with power off, try pressing on all the socketed parts on the MPU board, especially the U9, before swapping the MPU board. I don't think it will help but worth a shot.

#25 3 months ago

Have you tested the DMD itself in another game?

#26 3 months ago

I had this exact issue on a Slugfest. I was scratching my head forever. It did turn out to be a ribbon issue. I don't think it was an off by one situation, something was backwards or upside down. I'll see if I can find a pic or if I made a thread.

#27 3 months ago

The ribbon cable carries the address and data information for communication from the MPU to other boards on the system. If any board is tying any of these lines to Vcc or GND, then communication is not possible. The system may not boot or other strange issues can result.

This can happen either because of a misconnection of the cable on one of the headers, because a board is not receiving 5V and ground correctly, or because of a fault on the board or ribbon cable connector.

Check to make sure each of the boards if correctly powered and grounded and receiving 5V between the gray and black wires on the power connector.

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