I've seen somewhat related problems, but nothing that actually corresponds to my problem. This is a several months old PCG-81212M, and when booting up, after about 1-2 seconds after the screen is enabled (you see the VAIO logo), the screen goes blank. The only way I have been able to get it back is to press the DISPLAY OFF button, then any key, which will then enable the monitor for - you guessed it - 1-2 seconds. This is independent of OS, and the machine is operating just fine, since you can attach an external monitor, which works fine.
I have taken off the top cover and sprayed liberally with compressed air, just in case there was an issue with dust, with no change. I cannot see any visible signs of corrosion or damage to any components.
Operatiing on battery, AC, and AC without a battery installed makes no difference.
Any ideas?
I have taken off the top cover and sprayed liberally with compressed air, just in case there was an issue with dust, with no change. I cannot see any visible signs of corrosion or damage to any components.
Operatiing on battery, AC, and AC without a battery installed makes no difference.
Any ideas?