When rolling out a new nationwide radio system for the police in Kuwait in the 1990s, cops began bringing in their cars with complaints that the radio wasn't working.
It was inevitably down to them resting and splikking cans of Pepsi etc on the radio control head (the bit with all the buttons and displays etc). And they just weren't worth repairing. This behaviour was soon modified when the Ministry started charging them with the cost of a new control head!