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MathiasVH

macrumors regular
Original poster
Nov 7, 2009
147
6
Hi there

So I just finished upgrading the internal RAM on my new and already dear iMac G4 (I was really careful!), but to my horror the screen didn't turn on when I started it afterwards. The startup sound is there, and the fan spins up, but nothing happens on the screen. I've tried to insert the old RAM again, but that didn't help.

I'm almost sure that I've somehow messed up the logic board. But if it isn't that: Then what could it be? And how could it be solved?

If nothing can be done I guess I will be modding this.. But it really is a shame.

Best regards

Mathias
 

MAC MAN JW

macrumors 6502
Jul 12, 2011
320
17
Buffalo,Ny
Hi there

So I just finished upgrading the internal RAM on my new and already dear iMac G4 (I was really careful!), but to my horror the screen didn't turn on when I started it afterwards. The startup sound is there, and the fan spins up, but nothing happens on the screen. I've tried to insert the old RAM again, but that didn't help.

I'm almost sure that I've somehow messed up the logic board. But if it isn't that: Then what could it be? And how could it be solved?

If nothing can be done I guess I will be modding this.. But it really is a shame.

Best regards

Mathias

Try what is in the Link's let us know if it works :)
http://support.apple.com/kb/ht1712

http://support.apple.com/kb/HT1379
 

Intell

macrumors P6
Jan 24, 2010
18,955
509
Inside
Double check that you reattached the video cable to the logicboard. Be careful, the connector is very fragile. Also, don't forget to reapply the thermal grease when closing it.
 
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