Re: Y AXIS WRONG DIRECTION
Yes, the limit switch has malfunctioned. Depending on the age of the machine it is either a mechanical switch or an inductive sensor. If it is a pre-2005 machine (or somewhere around that date) it will be a mechancial switch which has just hung up in the activated position. On a more recent machine very often a chip will get stuck on the sensor keeping it activated. Either way you are going to have to take off the covers and find the switch/sensor.
An open mind is a virtue...so long as all the common sense has not leaked out.