Bump Power Cord, Computer Goes Black

Question

So I am having a very strange problem that I hope someone can help me with. Every time I touch/bump the end of the power cord (the connector? aka the part that goes into the iBook) my computer screen goes black. All my programs keep running and itunes keeps playing, I just get a black screen. I then just close my laptop, open it, and everything works fine again. This problem literally happens every time I touch the connector part of the power cord though. Anyone know what that problem is? Thanks so much!
P.S. - I have already tried reseting the PMU.

Answer 1

Hey Brandon,
Forgive me for my ignorance, but what do you mean which iBook we are dealing with here? >Like what more detailed information are you requesting besides it being an iBook G4, so I know specifically what to tell you.
So if you look here, in the section "iBook G4":
http://www.lowendmac.com/powerbooks.html
You'll see there were 10 different iBook G4 models.
Four 12" models:
# 12": G4/800, G4/1 GHz (2003), G4/1.2 GHz (2004), G4/1.33 GHz (2005)
and 6 14" models:
# 14": G4/900, G4/1 GHz (2003), G4/1 GHz, 1.2 GHz (2004), G4/1.33 GHz, G4/1.42 GHz (2005)
The information is on a bar coded strip under the keyboard.
While there are many similarities from model to model there are also differences, especially where cables are located.
In general I would look at the DC in board since that is very prone to damage. There is a know weakness in the inverter cable which we have seen fail right at the right hinge point (as you look at the iBook).
This is relatively easy to diagnose since you can still see the screen working if you use a flashlight.
Richard
Message was edited by: spudnuty