Hey, got a 21.5" imac A1418 14,3. customer supplied ram upgrade but we get the three beeps indicating RAM problem. We then bought ram from OWC which is where we normally get mac ram, but same problem, the three beeps. CMOS battery was 2.88v, so we replaced. I've done many ram upgrades in these, and not sure what's going on. Any insight?
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iMac 21.5" RAM upgrade, now three beeps
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Re: iMac 21.5" RAM upgrade, now three beeps
Originally posted by survivalbloke View PostHey, got a 21.5" imac A1418 14,3. customer supplied ram upgrade but we get the three beeps indicating RAM problem. We then bought ram from OWC which is where we normally get mac ram, but same problem, the three beeps. CMOS battery was 2.88v, so we replaced. I've done many ram upgrades in these, and not sure what's going on. Any insight?ASRock B550 PG Velocita
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Re: iMac 21.5" RAM upgrade, now three beeps
If you are inserting known working RAM then you need to go through all the switched power rails to see if they are present. Some are often shorted like the headphone jack I mentioned earlier. Also check the pins of each RAM socket as well for debris or loose pins etc.
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