Laptop Replacement Ac Adapter has blown.

I believe my laptops AC power adapter has blown. My laptop is a Compaq series pp2140.
When using the laptop the power adapter used to frequently make a squealing noise and get very hot. Now it has stopped working.
I also noticed that the laptop has an input rating of 18.5V and 4.9A.
The Replacement AC Adapter Model: Series PPP009L has an output of 18.5V and 3.5A
Could this cause the adapter to overload and burn out?
I am curious about this because I need to know which adapter to buy, the same model as the old one or a different model?