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820-2507 iMAC 27" boot but high speed fan, ASD reported sensor/SMC problem
- Thread starter protocold
- Start date
One sensor failing can't cause multiple sensors errors.
There must be a problem with one interface, which blocks the communication of entire bus.
Then the values reported for all sensors corresponding to that bus, will be affected.
Disconnect video cable and test again with external monitor.
BTW, any history available?
Someone else opened it for some kind of "upgrade" probably.
There must be a problem with one interface, which blocks the communication of entire bus.
Then the values reported for all sensors corresponding to that bus, will be affected.
Disconnect video cable and test again with external monitor.
BTW, any history available?
Someone else opened it for some kind of "upgrade" probably.
let me try to pull the video cable and re-test it.
some kind of "upgrade" yes, at least I saw the hdd was replaced. But also the serial number is gone (not visible in MacOS) so I have programmed a known good bios to it to get the serial number back. I guess the rom must have been corrupted somehow...
some kind of "upgrade" yes, at least I saw the hdd was replaced. But also the serial number is gone (not visible in MacOS) so I have programmed a known good bios to it to get the serial number back. I guess the rom must have been corrupted somehow...