Brilliant idea!

Interesting idea

Very clever, cool mod!

This could certainly be useful.

I could see this on a lot of my older games.....nice work Zene!! I hope this project comes to fruition.

Love it! You going to sell this only, or reveal pics/plans of the mod for DIYers to build their own? I'm assuming you mount switches behind buttons then tap into service switch circuit somehow? I think I've seen similar functionality on VP cabs (maybe not volume, but other functions).

I liked the idea, when we first started 5 years ago we thought about doing the same thing. The unfortunate part is sometimes the happ buttons would get stuck if not pressed straight, then as you can see in the video it's squeaky as hell, the last problem is you have to push it every time to move the volume you can't just hold the button. This is because we all tap off the existing volume switches and are a slave to the factory design. It's a cool idea, about four positaps and a little wire is all you need, should cost close to nothing but your time to install it. Would only work on stern games though, Wms/Bally door interlock keeps the volume unchangeable with out the door being open. Which is why we only build in the volume buttons on our stern headphone kits, or offer our up and down plug n play volume plates for stern and JJP doors. Shameless plug of my product
Looking forward to see this as a kit or if you send out the design to a lot of do it your self guys in the group

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Bummer, this greatly disappoints me.

Unfortunately, I am really bummed about the post stating this will not work on Williams (I have a Getaway). Other family members and I all like playing at different volumes (I like it loud), and everyone is constantly changing the volume when they play. Your mod would be perfect for us. I guess I need to test this by shrinking myself down and closing myself in the cab while someone else plays. On second thought, I could just depress the door switch to simulate it being closed to see if the volume buttons work or not in that state

Okay, I am disappointed, but kind of amused.

I just tested using the volume buttons on my Williams Getaway by opening the coin door, holding the door switch in with my finger, and then pressing the volume up/down service buttons. Instead of the volume adjusting, the displayed message on the DMD was "Open the coin door to adjust volume".

So, I thought to myself a) how would I press the volume buttons otherwise?, and b) let's say I was shrunk down and inside the cab with the door closed trying to adjust volume, then how would I be able to read the DMD that tells me the door must be open?

This begs the question to me if there is any kind of workaround for this on a Williams pin?

Sure. Program a small arduino style board that controls a relay that's in-line with one wire on the coin door switch (so it can open that switch programmatically, but not close the circuit if the door switch is open) and also have that board connected to two volume control switches --I think you can get all of these from the coin door interconnect board on wpc and later but I need to check a schematic.

Anyway a the simplest operation is to poll the new volume buttons and when closed, briefly open the coin door switch via relay, send the volume key to the wpc coin door board, and wait until the new volume button is open before restoring the coin door circuit via the relay.

Must be more complicated than that or someone else would have built it...right?

Playfield up coin door closed?

You can't adjust Wms Bally game volume even with play field up and door closed... it's not a option. the interlock has to be open which kills the high power under the playfields.

I know this. Mr Tant was asking (jokingly) how someone could push the volume from the inside and see the DMD. Answer coindoor closed with the playfield up. Doesn't solve the issue making the coin rejects volume controls though.

Yeah, i got where you were comng from. Glad i was alerted to this before i attempted the mod!

All that extra wiring, brackets and such and you have the key in the coin door.... I don't get it. Twist the key, open the coin door and use the friggin volume buttons. Voila!

I don't get it. Why don't you just make 10 louder?

What am I fking supposed to do with this??

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Oh, it's Metallica. I only need up. Carry on.