On my agenda this morning was designing and installing some custom coin reject inserts. I've done this before on all my other games and there's a little more to it than you would think, so I thought I would document the process for everyone. This is a fairly simple install, but a couple of things you need to be aware of to save yourself some time and frustration. You'll see that I swapped the OEM yellow buttons with a set of orange which I happened to have on hand (you can order them if you like). Whether you are doing a full button swap or just the inserts, the process is exactly the same.
- small tip Phillips head screwdriver
- 3/16" nut driver
- needle nose pliers
To begin with, I've attached a PDF of the inserts for anyone to print. If you prefer to order them, please PM me and I'll mail you a pair for $2. I print mine on thick gloss photo paper using a photo printer so the blacks are solid and dark, and the whites are bright and non-splotchy like with regular paper. To download the PDF, click on it then click the blue download button at the bottom right of the window. When printing make sure you are printing full size and not scaling, enlarging or fitting to paper.
Stern Coin Reject 4.pdf
To begin the installation, power off the pin and open the coin door. You'll first want to remove the two coin mechs by loosening the 2 thumb screws on each, sliding the guides up/down, then removing them. Pay attention to the orientation of the mechs as you'll need to put them back exactly how you removed them. Also, go ahead and pop the LED mounts off the coin door as they will be in the way otherwise.
The next step is to remove the two insert assemblies. I chose to do mine one at a time, but you could do both simultaneously if you like. First, you will need to remove the 4 hex screws that secure each coin reject button assembly. There are 2 the left and 2 the right of the upper coin mech bracket. For some unknown reason, the 2 the left are Phillips head but the 2 the right are not. To remove the upper right screw, I really had to bear down on it since it had recessed into the plastic bracket some. To remove the lower left screw, you will need to hold the red tension piece back with your other hand so that you can get to it with the screwdriver. Note that when you remove the last screw, be sure to put your hand on the outside of the coin door to catch all of the parts, otherwise they will fall to the floor and potentially crack/break.
Once apart you will need to remove the actual button that depresses by removing the c-clamp off the post at back with needle nose pliers. When doing this be sure to pay attention to the springs orientation and the orientation of the button (the tabs at the top are shorter). The inserts go in via the top, but to remove them you can use another insert or piece of paper to push up from the bottom corners which have open slots in them. When done, replace the button with spring, and put the c-clamp back on.
Next put the button assembly back together ready for installation. Again, note the orientation of both the button and the slot plastic (it goes with the taps facing towards the outside and only fits one way when the button is installed. Hold the assembly in it's place, and put the 4 screws back in to secure it.
When you are done with both buttons reinstall the coin mechs and tighten the thumbscrews, reattach the LED mounts, close the coin door, and you're done.
Here are some photos that show the differences with varying insert and bulb colors.
Original yellow button on right, orange button on left, and original cool white LEDs
Original yellow button on right, orange button on left, and warm white LEDs
Both orange buttons with original cool white LEDs (the warm white made thins too orange/less amber IMO)