My cannon A60 cam is going crazy

hey all
i got an a60 cannon cam
it was woking perfectly for the past years after i returned from vacation i noticed that the cam is not shooting any more what it should shoot
when i look at the display i see black light from the lcd
It is shooting images but its shooting the back image which i see on display
am afraid in my vacation it got any shock i didnt notice or so

So please guys can u suggest what might caused this and how can I repair it cuz
this cam is not worth paing other 150$ for repairing where its current market cost is that much or less

So please guys have anyone faced this prob before ?
just give me suggestions please