Model A1181: 1.83, 2, 2.1, 2.13, 2.16, 2.2, or 2.4 GHz Core 2 Duo processor

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Hard time diagnosing A1181 issue. Bad DC-IN, RAM or Logic Board?


I am trying to diagnose a friend's Macbook. I think I may or may not have resolved the issue and would just like expert opinions on the matter.

Basically, what happened is she said that it was dropped, and ever since then it has been working only about 40% of the time, meaning that when I power it on, 60% of the time I get the "you need to restart your computer. hold down etc..." error message.

I took the Macbook apart awhile back, and noticed that one of the RAM slots was broken, and wouldn't seat the RAM properly. The computer was upgraded to 10.6.8 and is running only 512 of RAM from just one slot.

I am almost positive that the RAM is the issue; however, I was just wondering why it would work some of the time. It is completely random, which confuses me a bit. I did leave the other RAM chip in the broken slot, thinking that the computer may recognize it. I didn't jam it in or anything, but it definitely didn't seat as proper as the other slot. -so this may be the case, where the computer is having a hard time with the broken RAM slot with a chip half-seated.

Obviously some other parts could've been damaged when the computer was dropped, but when I opened it up, I couldn't find anything else that was wrong with it. Before discovering the RAM slot issue, I even bought a new battery, and so I know it is not the battery.

The AC adapter and DC-in seem to be functioning a little erratically as well. Sometimes the light on the adapter is green, while other times it is amber, and then other times there is no light at all.

If the RAM slot is the issue, would it be possible to upgrade to @ least a gig of RAM, running off of just that one slot?

Any help would be greatly appreciated.

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I would remove the chip from the broken slot. For he maximum sized chip we need to know your exact machine so please give us the last three figures of your serial number, To check if the RAM is being seen, go under the Apple in the upper left hand corner to "about this Mac", more info > memory and see what is being seen. Try to resolve one issue at at time.

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Thanks for the reply. So, BANK 0/DIMM0 is all Empty. BANK 1/DIMM1 512 MB, DDR2 SDRAM 667 MHz and Status is OK.

Last three figures of the serial number are "WGL".


Apple MacBook "Core 2 Duo" 2.0 13" (White/06) Specs

Identifiers: Late 2006 - MA700LL/A - MacBook2,1 - A1181 - 2121

Your maximum RAM on t6his machine is 4 GB. So pull the 512 MB and install a 2GB PC2-5300 DDR2 667 MHz chip.


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