I have a very strange mac book pro issue where as it just randomly, turns the brightness down and ejects any discs, even when trying to reinstall the OS, now to add to this complication i have another one identical in my workshop, changing the logic board over does not resolve this problem however, if i place the logic board in the other chassis it also does it? (albiet only twice) sheer coincidence or logic board issue that seems affect components aswell preserving the effect even when the board is no longer present???
