What is happening to my sleeping Mac?

Thanks for the leads. I had got a new RAM card for my Mac about 10 days ago. Perhaps it could be causing this problem. I have read your links which appear to be start-up tones; I do not get such tones on start-up but got it twice when I had put the Mac to sleep. I am in the process of contacting the Apple technician who has installed the RAM. Shall let you know the end result once I know of the matter.

Thanks again. Take care and have a grteat day!

Hello John,

The technician whom I contacted did not turn up and the problem appeared to have gone away, but it has resurfaced again:

Just a little while ago, the problem I had mentioned in this thread has recurred: my unattended to Mac going black and giving out an alarm: three beeps followed by a pause. The screen would not come active despite pressing any number of keys, the Mac would not shut down despite pressing the power button, and finally I had to shut off the power supply from the wall outlet.

FYI,I had been working with Seashore when this problem recurred. But I have been playing with Seashore since 2 days and there was no problem then.

Have re-contacted the technician who should come today.

Hello Friedhelm,

I am a medical doctor and am not acquainted with computer diseases!

This problem has not yet gone away and the technician who came to attend seemed unsure of what could be the cause. He gave the RAM card which he felt would be the culprit and asked me to go to the shop where I had purchased it and ask for a replacement. The guys at the shop inserted the RAM onto their laptop [windows] and reported that it was working. They paid no heed to my complaint that the RAM does work. They held the view that it was due to a mismatch of this Ram with the other RAM cards in use. I did not have any knowledge about how to counter this contention of theirs and even do not know whether they are right or wrong in so stating.

I have to get back to the technician with what you opined: it could be due to a logicboard [BTW what's a logicboard] problem and hope things get sorted out. Shall let you know of how things will work out and also, please keep me posted of how you are negotiating this 'dangerous' problem.

Thanks for this input John.

I am based in India and to purchase stuff locally would be good should problems in performance surface. The local Apple dealer does have RAMS and going for those, though they be be pricey, will ensure that I will have assured after sales services.

Thanks for this reply. I will be asking the Apple technician who attends to my SOS calls and ask him to go through this thread. Hope the actual disease can be properly diagnosed and treated. Please keep us informed of your findings after you conduct the 'internal examination' of your Mac!

Thanks for taking this care for filling up this thread with this critical information. I wonder how frequent this type of affliction affects Apple computers. Guess it is few and far in between...otherwise there would have already been a great uproar over this matter as it is with the matter of iPhone's having videos in an upside manner.

I am fortunate enough to have taken a 3-year warantee for my Mac which is one year old now. I will have to insist my Apple technician to look up into this Logic board issue and replace the same.

Do you have with you any documentary evidence related to this Logic board problem...any written communication received from the service center you had approached? If yes, could you please mail it to me to my mail ID given under my profile? Such a communication will help me to interact better with the Apple technician in resolving this issue.