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Old Oct 14th, 2005, 04:41 PM   #1
 
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Question replacing logic board on iMac G4 FP 700

Hi guys/gals,

I've got an iMac G4 FP 700 with faulty video memory. Basically running the hardware diag cd gives a Display error 13/2.

This machine isn't worth much anymore and I haven't got Apple Care so having the logic board replaced with a new one would cost more than what the computer is worth. They seem to go for $500 +...

If ever I can find a broken iMac with a good logic board or just a used logic board from eBay or somewhere else, I would like to try replacing it myself (I have the service manual for this machine as well).

Here's my question: Apple says that you can only replace the logic board with the equivalent, i.e. a 700 with a 700, not with an 800 or 1ghz. Is this actually true? It's not that I must get a speed increase, but I may have better luck finding a used logic board if it's not so specific.

Any information would be greatly appreciated...
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Old Oct 14th, 2005, 05:20 PM   #2
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Quote:
Apple says that you can only replace the logic board with the equivalent, i.e. a 700 with a 700, not with an 800 or 1ghz. Is this actually true?
If this claim was pulled from the service manual, it's not technically true. Service Providers must replace the defective part with an exact duplicate (Apple rule which applies to Service Providers only). However, technically speaking, you can throw any speed logic board into any flat-panel iMac G4, assuming the boards are physically correct to fit the casing.
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Old Oct 16th, 2005, 09:06 AM   #3
 
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Thanks Lars,

fyi... The claim was not from the service manual but from an Apple rep when I first called their help line to see what my options were.

Now, if I could only find a cheap functional logic board!
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Old Oct 16th, 2005, 10:49 PM   #4
 
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Quote:
Originally Posted by Lars
If this claim was pulled from the service manual, it's not technically true. Service Providers must replace the defective part with an exact duplicate (Apple rule which applies to Service Providers only). However, technically speaking, you can throw any speed logic board into any flat-panel iMac G4, assuming the boards are physically correct to fit the casing.
there was a logic board change halfway through the production run of the flat-panel iMac.

changing from a 700-800 shouldnt be too difficult. just make sure that you contact an experienced service tech before you go ahead. also, keep in mind that if you provide the part to be swapped, most service dept's wont warranty the part or labour on it. they have no clue if the part is good, plus if it ships DOA, youre the one having to deal with it.
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