How do I change the set price on my soda machine?

Hello theRS,
I will assume since all of your prices are the same (50 cents) that you have SINGLE PRICE soda machine. (If it's a multi-price machine see the note at the end of this post.)
Open the door of your machine and find the COIN MECH.
Open or remove the COIN ACCEPTOR (see pic)

You should now see some DIP SWITCHES behind the acceptor. (see pic below)
Almost anytime you have dip swithes the price is set by turning them on or off as follows:
1st switch = .05
2nd switch = .10
3rd switch = .20
4th switch = .40
5th switch = .80
6th switch =1.60 (not all machines have this high a price switch)
The price value of each switch should be marked by the switch and the direction for ON should be shown somewhere in the area.
You will need a pen or very small screwdriver to flip the switches.
So to set the price to 50 cents you would turn switches #2,#4 ON, the #1,3,5 off. and #6 if present.
To set the price to 75 cents you would turn #1,2,3,4 ON and #5 off and #6 if present.
WARNING: after the price switches, the other switches control other things, leave them alone.
ALSO, each make and model of changer is slightly different so they may not look exactly like the pic below. Some will be verticle instead of horizontal, some may have less switches than the picture.

MULTI-PRICE MACHINES
If you have a multi-price machine the instructions should be plastered on the inner door. If they have worn off you can download many of the operating/programming manuals (in pdf) for many of the most popular machines from RIGHT HERE ON OUR WEBSITE! Free Vending Machine Service Manuals OR just go to (using the menu bar at the top of the page) VEND LIBRARY > VENDING MANUALS EBOOKS > Free Vending Machine Service Manuals and scroll until you find your make and model, click on the link to see the manual, you can save a copy as you would any other pdf document.) If your make or model is not there you will need to contact the manufacturer to see if you can order a copy (see links below). Each multi-price machine make and model is different. With the instruction sheet (programming guide) you just read and follow the directions. Without the instruction sheet it will be VERY HARD to do, however here are some other helpful things you can do:

If you have a Dixie-Narco with the SIID controller board and your instructions are on the inner door gone :( the following article is from "ezinearticles.com" and might prove helpful:

Setting the Price on a Dixie Narco SIID Soda Vending Machine
By Kenneth Armstrong
The Dixie Narco soda vending machines that have the SIID controller can have their prices set very easily. The vending machine has
two modes of operation. One is the normal mode and the other is the service mode. To enter the service mode you will need to
open the vending machine door and press the service mode button that it found on the control board of the vendor. To find the
control board you can follow the wiring back from the coin mechanism to where it plugs into a device that is similar looking to a
computer board with a lot of wiring coming out of it. Amongst these wires you will find a button that can be pressed. Go ahead
press it you won't get shocked or ruin your vending machine.
The service mode has many different options that you can program into your vending machine. We are going to focus on one
particular the "SP" or Set Price menu option. When you have press the service button on the control board, you have entered the
service mode of your soda vending machine you will see "HD" displayed on the front LED display of your vending machine. This will
display for about 2 minutes if no buttons have been pressed your vending machine will return to the normal mode.
From here we are going to want to use the very first two selection buttons to move through the options for programming your
machine. To move to the next programmable option you are going to want to press the first to selection buttons simultaneously,
together, until you see "RD" displayed on the LED. Now we are going to repeat this step once more and press them together one
more time and now you should see "SP" displayed. This is where we going to want to be. This is the Set Price mode of the vendor.
While you are in the price setting mode of your vending machine you can set the prices of your selections individually or set the
price of the whole machine to one price. When we want to set the price of each selection all we have to do is press that particular
selection and hold the button in and you will see the price increment. Keep holding the button and when you get to your desired
price let that selection go. Now just move onto the next selection and repeat the processes by holding that selection button.
You may be thinking to yourself I have gone past the price that I want the selection for. Don't fret just let that selection go and press
and hold it again and the price will decrement. You can repeat this again and the price will go back up if release the selection and
press and hold it again. This is not a difficult process now, is it? Say that you want to have all the prices set for one price on your
machine.
You can achieve this by setting the price of the first selection and then pressing and holding the 3rd and 4th selection button
together for 5 seconds and that will set the whole soda vending machine for one price.
To complete this task all we need to do now is shut the soda machines door. Doing this will save all the prices into memory. We
should go through each selection making sure that the prices are set to what we wanted them for. You should press each selection
button and see what price displays and I would go ahead and vend each selection just to be on the safe side and see if it vends for
that particular price.
We are done. Go now and enjoy the day, enjoy the accomplishment that you have achieved and always enjoy the profits that you
are going to reap with your soda vending machines. Remember if you want to find out if this process will work for your machine just
take a look at the tag on the left hand side of your machine if you see SIID after the model number, example DN501E SIID, it most
likely it will work.
About the Author
Kenneth Armstrong has been in the vending industry for over a year now. You can find more of these simple free how to articles at
From article by Kenneth_Armstrong

In GENERAL, other multi price soda machines I have seen are programmed in a similar manner (but not exactly) to the SIID instructions above.

ALSO, the original programming guides (in pdf) for your machine can be found here on our website (in our vending library) or from the manufacturers at the links below. Be for warned neither manufacturer organizes their docs very well and you may spend quite a bit of time searching for the doc you need.

Dixie-Narco docs can be download in pdf from our website here: http://www.vend-resource.com/book/vending-library-free-service-manuals-e...

Vendo (now SandenVendo) you can get their manuals (in pdf) from our website: http://www.vend-resource.com/book/vending-library-free-service-manuals-e...

FRANK