Replacing 3 slot coin door with single slot coin door.

[Mark]

Hi guys,

Could anyone tell me what is involved in replacing a 3 slot foreign type coin door, with a single slot UK door.

I imagine changing the actual door itself is simply a case of removing the old one and installing the new one. Also, I assume that the test switches will just swap across.

The thing I imagine would be harder to do is wire up the multi coin mech. Is it a case of getting a new PCB and loom, or is there more too it than that?

Thanks in advance!

Mark

 

[Jay Walker]

I converted a few Dutch-spec Williams Wpc games from 2 & 3-slot to Uk 'Eca' (Electronic coin acceptor) doors. You're right re. the actual fitting of the door - it's held by four coach-bolts. With the factory setup, the game's wiring is no different upstream of the interface board in the cabinet, so the job involves the following;

• Change Coin Door Interface board, or convert existing one with additional connecting header, 8-DiL switch, etc.
• Fabricate additional wiring (12v & ground, coin inhibit lines, etc) for the coin acceptor, and add onto existing door wiring harness.
• Alter wiring for coin entry light.
• If necessary, alter mounting of 'coin door closed'/interlock switches.

All of which is much easier with an original installation to refer to, which I had at the time, being in a workshop environment. Easiest of all would be to swap the door, harness and pcb between games as a set. I think Wpc, the Wpc-S and Wpc 95 use different interface boards, though.

For commercial use, I also modified the lock for the front moulding, since I didn't have the piece of metal fitted to the Eca door, which stops it closing unless the moulding is secure. I copied the old Stern (or was it Chicago Coin?) method, drilling a hole in the lock lever and adding an extension spring to return the lever & lock to the 'closed' position. This ensured that if the moulding was in place, it was locked. Later Wpc-s machines had Williams' more integrated version of this.