Playstation could not be turned on

My Playstation is the more compact version called the PSone but i believe the hardware is the same with the original Playstation.

It had been years since i used this and when i plugged in the power, pressing the 'power on' button no longer turns on the machine. There is no light appearing as well, it seems like there is not even any power going into the machine but all the power plugs are plugged in tight and secure. It is caused by dust build-up inside the machine?