But how do i know if it affected it cause it turns on just doesn't read games
It could be that the water that got in the system just affected the blu-ray drive. The fact is that you will have to get your system serviced. Will Sony service your PS3? I don't know, you will have to contact them.
My cat knocked over a cup of water on my ps3 does it void the insurance? What are signs of water damage btw it turns on it just doesn't play games or blu rays what are the chances of Sony fixing it answers please
I am not sure why you would expect Sony to cover the cost of fixing/replacing the product when damage was done by your carelessness. If that was the case they would be out of business with all the claims.
P.S. You only need one thread on the topic.