Vending machines were invented for convenience and to support the idea of vending without the use of a cashier. But out of convenience most of the time comes inconvenience when these machines experience technical problems. Since vending machines dispenses a wide variety of products ranging from snacks to beverages, candies to some countries ice cream. And in other locations newspapers are sold which are commonly called “honor box” , the problem with this particular vending machine is once you open the door you have access to all the products inside. So a customer either has to be really honest or knows that it is useless to have more than one newspaper. A good solution would be that the box has to have a weight sensor calibrated for certain number of newspapers it can contain. And has a calibrated weight for individual newspapers in the box for individual purchases. Thus when the customer gets more than one newspaper the box automatically sets off an alarm.

In other countries alcoholic drinks are also being sold through these vending machines. Some cigarettes and tickets to hot or cold drinks such as coffee and drinks which has ice dispensers and other noted vending machines dispenses iPods, fried foods , underwears and porn magazines and sexual lubricants. So, most of these machines cause different kinds of technical and mechanical problems. The most common problems are coin acceptors vending machines which most of the time jams up when there are foreign objects or a paper bill is inserted into the coin slot. This has to be checked every now and then. Another problem is when coins fill up past the coin detector which later on prevents future purchases. This should be cleared often. Some machines tend not to accept quarters and other coins the first time you put them in. it may be due to old worn coins. So you should have new coins available in your pocket.

Vending machines using a spiral mechanism to hold and dispense a products, mostly bagged products such as potato chips for example, poses problems which the products snags on the metal spiral when it reaches it full turn and fails to vend. Commonly it is because the product is not aligned when placed or following products was disaligned when it was banged by an outside source. The products should be aligned and so with the metal spiral. Other manufacturers attached a small piece of plastic to the tip of the metal spiral that extends to help push and clears the product from the spiral.

Other problems are when the machine is not being supplied with proper power or has a short circuit, damage due to vandalism, or poor maintenance. For the power supply problem operator has to check before operating. Vandalism and short circuits are uncontrollable sources that just have to be fixed when it happens. Condition of the machine has to follow strict maintenance procedures by the operator. Bills validators sometimes falsely reject a bill because it was dirty, crumpled, or ripped the solution to this would be using new bills. So it is good to have good bills with you in case you need them. Otherwise you have to have poor bills exchanged for new ones or just forget your want or need in the vending and just purchase in a store instead.