Red ring of death, tried to fix it and fml still...

My Xbox is old from 2006. The red ring of death was fixed under warranty probably 4 years ago. Just a few days ago it happened again, so I figured I’ll fix it myself and I feel like I did everything perfectly but it still boots up with the three flashing lights. Has anyone on here fixed their xbox when this has happened? Could my Xbox just be a goner?

Ugh

Thanks

I searched for this topic but everything was pretty old and no one posted what they have done to fix it themselves.

---------- Post added at 11:33 PM ---------- Previous post was at 11:32 PM ----------

I cleaned the chipsets with rubbing alcohol til they looked like mirrors, reapplied the thermal paste very carefully and it still is fucked.

Never mind looks like I fixed at after all, might of had my heat sink screws a little too tight.