How to fix YLOD PS3, Disk Read issue, Red Flashing Lights

So I recently purhased the most awesome guide on how to fix PS3 hardware issues. Click Here! if you want to buy it. What I started doing is charging people $50 dollars to repair their consoles and BANG.. profit. I originally bought this to fix my own PS3, and in an instant I started fixing other peoples PS3, I easily make $2000 a month doing this on odd days part time.