Bake my motherboard longer to solve three beeps?
Macbook Air A1369 circa 2011
When trying to startup my Macbook Air circa 2011, I encountered the dreaded "three beeps" followed by a few seconds' pause repeating endlessly.
I tried all of the answers in this helpful thread 3 beeps on start up
and none of them worked until the last, surprising one: baking the motherboard! Doing so at 350 degrees F for 8 minutes led to the following: when I pressed the power button, I heard the Apple "chime" and the normal blue screen lit up.
I was so happy! But then, after about 1 second, a series of multi-colored flashing bands appeared on the display. The screen then went black. Now, the three beeps has occurred again and the I can't get the chime or normal blue startup screen anymore.
Does this minor success mean the baking is useful and I should try it again at a higher heat? Longer time? Or at this point is my computer just toast? (no pun intended)
Any help is appreciated . . .