(Topic ID: 304748)

Williams Sound Board Conversion

By GLSP3022

6 days ago


Topic Heartbeat

Topic Stats

  • 13 posts
  • 4 Pinsiders participating
  • Latest reply 58 minutes ago by DumbAss
  • Topic is favorited by 1 Pinsider

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#1 6 days ago

I noticed shortly after owning my Cyclone that several sounds were missing. After some investigation, I realized my sound board is actually from a Taxi machine. 553 on the tag. This board is missing a good bit of components.

There's an old thread on Pinside regarding this exact same issue. The OP was going to attempt to re-populate the Taxi board to match a Cyclone sound board. They are identical as far as layout.
There is no resolution as to whether this worked.

I have a Cyclone sound board on loan from a friend. I was going to attempt the same. I am good at soldering boards. Besides the missing components, only U5 appears to be different.
Can anyone else shed some light onto this? In theory making the boards match should work right?

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#2 6 days ago

It will definitely work.
Press on.

Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info

#3 6 days ago

This is the section that is not stuffed/populated.

cvsd_lane.jpg

There are some component value differences between 11A, early 11B and late 11B. Note the values on the board and in the manual and cross check to be sure. The value differences will likely affect volume levels (mixing) between the lanes.

The value differences are not limited to the CVSD lane. The differences are across all the lanes.

#4 6 days ago

DumbAss ... If you have the component values that vary across the System 11 models, I'd love to add that info to the PinWiki.
--
Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/Contact ... for board repairs
http://www.PinWiki.com - The Place to go for Pinball Repair Info

#5 5 days ago
Quoted from ChrisHibler:

DumbAss ... If you have the component values that vary across the System 11 models, I'd love to add that info to the PinWiki.
--
Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/Contact ... for board repairs
http://www.PinWiki.com - The Place to go for Pinball Repair Info

Yes please! As the William's manuals were not as great during this era.

#6 14 hours ago

ChrisHibler Can you tell me what the B is on the board and schematic? I can't find a reference to what it is or that value. Please see the pics.

Getting ready to order parts to populate this board.

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#7 13 hours ago
Quoted from GLSP3022:

ChrisHibler Can you tell me what the B is on the board and schematic? I can't find a reference to what it is or that value. Please see the pics.
Getting ready to order parts to populate this board.
[quoted image][quoted image]

Here you go.
At the bottom of the schematic....

Williams_B-capacitor (resized).jpg
#8 13 hours ago
Quoted from Inkochnito:

Here you go.
At the bottom of the schematic....
[quoted image]

Thanks!...that note isn't on my copy of the schematics.
My page was sized wrong and cut off

#9 6 hours ago

And another data point...from the Bad Cats manual.
They are called bypass capacitors.
What do they do? They tamp down the high frequency noise created by the connected integrated circuit as that ICs gates open/close. In general, every TTL IC will have a bypass capacitor connected.
--
Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/Contact ... for board repairs
http://www.PinWiki.com - The Place to go for Pinball Repair Info
pasted_image (resized).png

#10 6 hours ago

Thanks guys. ChrisHibler Inkochnito
I guess my last question before I start this:

U5 is different on both. Will I need to change out that chip? They're even different sizes.

#11 5 hours ago

Also Chris, you were asking about resistor values. I did a lot of testing between the Taxi board and the true Cyclone board. The only resistor value I could find different is the one I have marked with red paint in the pic.
Taxi has a 10k there
Cyclone has a 6.8k installed.

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#12 3 hours ago

U5 is the ram chip. 6116 has 24 pins and smaller capacity chip. 6264 has 28 pins and more capacity. If the board has 28 chip through holes to accommodate the 6264, install the 6264. It will work fine. Might need a jumper changed or installed. I’d have to check the PInWiki to know with certainty.

Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info

#13 58 minutes ago
Quoted from ChrisHibler:

DumbAss ... If you have the component values that vary across the System 11 models, I'd love to add that info to the PinWiki.

Sorry I don't have the time to better present the material (i.e. a more readily consumable form). I am trying to finish off some loose ends and I am coming in warm to hot to complete the tasks before a hard deadline (that you are already aware of).

When I was building the reproduction board capture I collated all the different values. Everything is based on the manual BOM but I did verify some of them with different boards from actual machines. I didn't verify it against every board from every different machine as I only have a few System 11 games.

These are the value differences. The jumper selection (A, B or C) aligns to the resistor value above.

01_values.jpg

These are the selection criteria (A, B or C) grouped by games.

02_groups.jpg

Cyclone and Taxi only differ in the value of R16 (corresponding W16 in the table). The difference is 6.8k to 10k. You have already noted that. Fortunately Cyclone and Taxi are groups A and B. If you try to change boards between groups A/B to C there are many more notable value changes.

Hey there! Got a moment?

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