Why is my PS3 super slim not powering on (no light)

Hello!

Today i have a ps3 super slim that, when plugged in, does not turn on or show any lights when plugged in.

I had recently played games on this and had no issues, but noticed the console was getting hot without playing anything.

So I opened it to clean all of the dust out and replace thermal paste. After putting it back together, it started to show signs similar to power supply failure: pressing power button would turn on the console for a few seconds and then power off. Eventually it stopped powering on at all and no longer shows a red light when plugged in.

I have since tried other power outlets, a different power cord, and replaced the power supply. No change in symptoms either. Any other options??