Ps3 60 gb freezing issue

I’m having freezing issues with the ps3
after 20-30 minutes of playing the system, green pixles pop up and the game freezes.

have to do manual shut down and restart, then the issue re occurs.

does anyone have any recommendations on it? I don’t feel ike paying $149 to sony so they can fix the problem. Thanks in advance!

holes blocked with dust?

Sounds like it is over heating. Make sure the system in in a well ventilated area.

After similar issues i’ve got YLOD so do the backup and be prepared to buy a new one of fix the old