(Topic ID: 261272)

Blank Display on Congo Williams


By PinballGurus

11 days ago



Topic Stats

  • 55 posts
  • 10 Pinsiders participating
  • Latest reply 2 days ago by PinballGurus
  • No one calls this topic a favorite

You

Linked Games

Topic Gallery

There have been 15 images uploaded to this topic. (View topic image gallery).

pasted_image (resized).png
75367B09-AB1A-44C1-8B2F-5D6AE3242A0F (resized).jpeg
8BCEC191-E5BD-407D-8FB2-EA670D069968 (resized).jpeg
EB93693B-6A72-4052-AB35-E8180A9961C7 (resized).jpeg
8CF233E5-3CD3-4215-9C2B-57C03186CE7B (resized).jpeg
pasted_image (resized).png
FD72B199-C484-425D-AF0A-97649DB8EFE2 (resized).png
FF568283-9BF3-4605-9FCF-013559A5322C (resized).png
55110A9B-F5AC-4962-A087-63E35BEF3D4E (resized).jpeg
DCDD685C-B8ED-454F-925D-B7435FCD8836 (resized).jpeg
946D47DD-C328-45D3-8D74-992ECCE13908 (resized).jpeg
E3C0784A-6A86-4A40-BEF2-EFBC356D8B78 (resized).png
379B3FB4-2BB0-4156-A7FE-0DEF20E618AD (resized).jpeg
0E37F748-4E0E-43EF-8F4C-FD7DE0EF1039 (resized).jpeg
B2C0824A-D798-4AB1-9456-CCC9DFF571B9 (resized).png

There are 55 posts in this topic. You are on page 1 of 2.
#1 11 days ago

Hi there... I pulled the display and put it in another machine and it works fine, so I pulled the display controller board and read it likely needs a high voltage replacement kit. Has anyone else done this? Am I on the right track? I couldn’t find the kit in stock.... does anyone know where I can find this kit or a replacement board? Assuming the controller is the issue.
B2C0824A-D798-4AB1-9456-CCC9DFF571B9 (resized).png0E37F748-4E0E-43EF-8F4C-FD7DE0EF1039 (resized).jpeg379B3FB4-2BB0-4156-A7FE-0DEF20E618AD (resized).jpeg

#2 11 days ago

I see someone has added a jumper wire on the back of that board,Did you test that jumper for continuity?Try and reflow a bit of fresh solder on that jumper?

#3 11 days ago

Close up pics showing some very bad burnt traces in a couple of spots

#4 11 days ago

I check the repair area and it actually looks pretty good. I will reflow then solder though.

Does anyone know of a replacement for this board? I haven’t seen any. Or anyone that fixes these?

#5 11 days ago

From another thread...

If you aren’t excellent at fixing boards let Rob Anthony or Chris Hibler do it. Both are great pinsider’s and experts on WPC95 AV boards.

Rob Anthony
Pinball Classics
http://LockWhenLit.com
Quality Board Work - In Home Service
borygard at gmail dot com

Or

Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info

https://pinside.com/pinball/community/pinsiders/chrishibler
https://pinside.com/pinball/community/pinsiders/borygard

#6 11 days ago
Quoted from PinballGurus:

Does anyone know of a replacement for this board? I haven’t seen any.

There is a Rottendog replacement available (I am also working on a replacement board for myself). You don't need a replacement board. That's overkill to fix this problem.

If you're not in a hurry (and prepared for a "small" drive) there's a Northwest Pinball and Arcade Show repair party on Sunday 23rd of this month in Milton, WA (near Fife and Tacoma). There will be plenty of experts there to help you repair the board. Check the show or NW buyers thread for more information.

#7 11 days ago

yup rob Anthony just fixed my congo with same problem.

#8 11 days ago

I’m not bad at fixing boards, but it’s for a customer and was trying to do the least expensive, quickest, and most effective repair; time is money. I figured I could fix the board later once I learned the repair. I didn’t see the Rottendog board for Congo on their site? I saw a WPC89 display controller; but not for Congo. Curious where you found them?

Thanks everyone. I’ll probably check them out 100%.

#9 11 days ago

Tacoma is pretty far, but I’ll see if I can make it somehow.

#10 11 days ago

I can definitely install the kit if I can find it. My local guy at Norvac in Salem was out of the exact parts I needed. Must be popular parts.

#11 11 days ago

I would definitely have them do the boards with the smaller chips as those aren’t my thing. Fat hands.

#12 11 days ago
Quoted from PinballGurus:

I didn’t see the Rottendog board for Congo on their site? I saw a WPC89 display controller; but not for Congo. Curious where you found them?

The product you want is WAV095 (or WAV095-1). See http://rottendog.us/wav095.html for official Rottendog information.

Quoted from PinballGurus:

I can definitely install the kit if I can find it. My local guy at Norvac in Salem was out of the exact parts I needed. Must be popular parts.

I order the separate parts to build my own "kits". If you really want a kit I think you could probably find one on ebay.

#13 11 days ago

That’s what I figured I would have to do. I don’t need the kit then. I really appreciate your help. Thank you!

#14 11 days ago

I think I did see that, but it’s a lot more than the WPC89, so I will likely repair it since it won’t take too long.

E3C0784A-6A86-4A40-BEF2-EFBC356D8B78 (resized).png
#15 11 days ago

My guy just wants a new board so that’s that. I went ahead and tried to reflow the solder in the area it was repaired before and the plugs. Might get lucky. I’ll report back tomorrow.
55110A9B-F5AC-4962-A087-63E35BEF3D4E (resized).jpeg946D47DD-C328-45D3-8D74-992ECCE13908 (resized).jpegDCDD685C-B8ED-454F-925D-B7435FCD8836 (resized).jpeg

#16 11 days ago

Without any evidence (i.e. wild guess) I'd bet that your +62V is bad.

#17 11 days ago

Is that the same repair?

Quoted from DumbAss:

Without any evidence (i.e. wild guess) I'd bet that your +62V is bad.

FF568283-9BF3-4605-9FCF-013559A5322C (resized).png
#20 10 days ago

In my experience it's the DMD caps that go bad on these most often. I'd replace those first before replacing all the other DMD components.

#21 10 days ago

This should have been step 1. Measure voltages. You may not even need the full HV repair kit.

My experience leads me half the time to the MPU that has battery corrosion below the battery holder and kills the DMD, later on even keeps the game from booting if the corrosion gets bad enough.

So, please post a picture of the MPU board to be sure there is not another issue that will pop up later.

#22 10 days ago
Quoted from PinballGurus:

I can definitely install the kit if I can find it. My local guy at Norvac in Salem was out of the exact parts I needed. Must be popular parts.

WPC High Voltage Repair Kit-
http://LockWhenLit.com/Products.htm
About half way down the page.

--
Rob Anthony
Pinball Classics
http://LockWhenLit.com
Quality Board Work - In Home Service
borygard at gmail dot com

#23 10 days ago
Quoted from PinballGurus:

... I didn’t see the Rottendog board for Congo on their site? I saw a WPC89 display controller; but not for Congo. Curious where you found them?...

http://LockWhenLit.com/RD.htm
It's the WAV095.

--
Rob Anthony
Pinball Classics
http://LockWhenLit.com
Quality Board Work - In Home Service
borygard at gmail dot com

#24 8 days ago

Ok. I finally have some more info to share. After my resoldering job I put the board back and boom it worked for about a minute then the screen faded to what you see in the video. So at least I got something. Of course this leads me to believe it just a bad component on the board. Voltages were present, what specific voltages are important? What pins specifically? Thanks in advance!

#25 8 days ago

Tap on the speaker panel to see if there is a bad connection by chance. Carefully wiggle the DMD power connector. Just don't touch the back of the DMD.

#26 8 days ago

I wiggled it along with several caps to see if I could get any change in the display and got nothing.

#27 8 days ago

Just seemed to slowly fade away.

#28 8 days ago

-112v,-100v and 62v are all important. Test the voltages again once the DMD fades

#29 8 days ago

What plugs are those? Sorry this is all new to me.

Quoted from PinballManiac40:

-112v,-100v and 62v are all important. Test the voltages again once the DMD fades

#30 8 days ago

It is the single 7 pin DMD power connector on the DMD

#32 6 days ago

Ok. I got the voltages and it appears I’m missing is pin 8. All the others read as follows:
1. 115v
2. 105v
3. Key
4. Ground
5. Ground
6. 5v
7. 12v
8. .53v (should be 62-75v)

So I think that narrows it down at bit. I appreciate all your help.

#33 6 days ago

I’m assuming this is the area I would need to repair?

FD72B199-C484-425D-AF0A-97649DB8EFE2 (resized).png
#34 5 days ago

Can anyone verify I’m on the right track with this repair?

#35 5 days ago
Quoted from PinballGurus:

Can anyone verify I’m on the right track with this repair?

You are, but I would start with F601 and D6-D9 area, measure your DC voltage at the cathode of D6 or D7.

pasted_image (resized).png
#36 5 days ago

Had the same thing on my DMD--- Demo Man just a few weeks ago. Turned on, fine for a few and then faded out.

Ended up getting a high voltage DMD piggy board from pinball life. $53.

Boom... problem solved and it was a 5 minute install.

#37 5 days ago
Quoted from Beechwood:

Had the same thing on my DMD--- Demo Man just a few weeks ago. Turned on, fine for a few and then faded out.
Ended up getting a high voltage DMD piggy board from pinball life. $53.
Boom... problem solved and it was a 5 minute install.

The board is not directly plug-n-play compatible with WPC-95. Williams slightly changed the high voltage circuit from WPC-89 to WPC-95. The WPC-95 board transformer secondary plug contains both the secondaries for audio and video that will need to be split off in order to use this high voltage power board.

#38 5 days ago

So the piggyback method no good.

Quoted from DumbAss:

The board is not directly plug-n-play compatible with WPC-95. Williams slightly changed the high voltage circuit from WPC-89 to WPC-95. The WPC-95 board transformer secondary plug contains both the secondaries for audio and video that will need to be split off in order to use this high voltage power board.

#40 4 days ago

Sorry, Congo is not listed as a supported game, as mentioned above. I didn't realize WPC95 was incompatible.

#41 4 days ago

You can go with a ColorDMD and not worry about repairing the high voltage as it would not be needed if you go that route.

#42 4 days ago

Good to know. Crazy. Recommendations?

Quoted from PinballManiac40:

You can go with a ColorDMD and not worry about repairing the high voltage as it would not be needed if you go that route.

#43 4 days ago

I prefer the LCD since I like all the other display modes. If you think you will not change from dots, then LED likely be your choice.

#44 3 days ago

So I must be blind. Does anyone have a good schematic for this board? I cannot find a Q10 transistor anywhere. I think my board may be different.

I have tested Q4 and Q31 transistors and they were bad, but I cannot find the others. Maybe I’m blind?
8CF233E5-3CD3-4215-9C2B-57C03186CE7B (resized).jpeg

#45 3 days ago
Quoted from PinballGurus:

Does anyone have a good schematic for this board?

I though I posted the schematic for the whole 62V section, is this not the correct one?

#46 3 days ago
Quoted from PinballGurus:

Good to know. Crazy. Recommendations?

I prefer the Color LED, I think the dots mode looks best, perhaps its because this is the mode the images were made to be displayed in, plus the LED colors are much more vibrant than the LCD. The entire LED vs LCD basically comes down to personal preference and the game they are used in.

If you are on a budget, you can also so with a monochrome LED display like the ones Stern used in their SAM games and save a couple hundred bucks.

#47 2 days ago

So just so I’m clear. If I choose to get a color DMD in lieu of repairing the 62 volts it will simply work? So strange to me. Sounds like a no brained. Sounds too easy though.

#48 2 days ago

This is the Q10 I’m talking about. It’s the twilight zone repair. Not sure what I’m missing... I’m mainly doing this to learn at this point.

http://www.firepower.2ya.com/4-TZ-dmd-repair.html

EB93693B-6A72-4052-AB35-E8180A9961C7 (resized).jpeg
#49 2 days ago
Quoted from PinballGurus:

So just so I’m clear. If I choose to get a color DMD in lieu of repairing the 62 volts it will simply work? So strange to me. Sounds like a no brained. Sounds too easy though.

Yes, ColorDMD will work. It does not use -112v, -100v nor the 62v.

Promoted items from the Pinside Marketplace
From: $ 40.00
Cabinet - Other
Rock Custom Pinball
$ 259.95
Lighting - Led
Pin Stadium Pinball LEDs
$ 30.99
Lighting - Interactive
Lee's Parts
$ 12.99
Eproms
Matt's Basement Arcade
There are 55 posts in this topic. You are on page 1 of 2.

Hey there! Got a moment?

Great to see you're enjoying Pinside! Did you know Pinside is able to run thanks to donations from our visitors? Please donate to Pinside, support the site and get anext to your username to show for it! Donate to Pinside