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G4 PowerBook Screen Problem
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Junior Member
Join Date: Feb 2001
Status:
Offline
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Helping a friend with a 15" Aluminum PB (not sure what speed off hand). The back lighting on the screen doesn't seem to be working-i.e. if you look closely when you turn the computer on, you can see the image on the screen, but there is no light. An external monitor works fine. Things I've tried: zapped PRAM, reset PMU, starting from system DVD. No change.
Before taking the computer apart, is there anything else I can try. If not, is it most likely the inverter board? What else could it be? If I need to order a part, I would like to do so before I take it apart (unless taking it apart would solve the problem without ordering any parts, e.g. a loose cable).
Thanks!
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Mac Elite
Join Date: Mar 2006
Location: Here
Status:
Offline
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I am not trying to insinuate that you are stupid, but have you tried the brightness button? Every once in a while this kind of thing happens to me.
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Junior Member
Join Date: Feb 2001
Status:
Offline
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That was one of the first things that I tried. Nevertheless, it never hurts to mention the obvious-sometimes those things are so obvious you skip right past them.
Any other advice?
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Grizzled Veteran
Join Date: Jan 2005
Location: New Zealand
Status:
Offline
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Try holding down eject when you start up the PB. I had a random issue with mine about 10 months ago when i turned it on (with a CD in the drive) and the screen just didn't show anything. Really freaked me out. Was holding down eject during startup to get the CD out, and suddenly my display comes back to life.
Worth a try..
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MBP 15" C2D 2.2GHz 4.0GB 500GB@5400
iPhone 4 32GB Black
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Mac Elite
Join Date: Mar 2006
Location: Here
Status:
Offline
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I suppose that the light could have burned out. There may also be a loose wire. I am leaning toward the common "send it in" advice.
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Registered User
Join Date: Aug 2005
Status:
Offline
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That was one of the issues that I had with PB 1.5Ghz. The light in the LCD burned out. Had to go into Apple for repair. Worked fine on the Apple Display but was dimmer and dimmer on the system itself until it finally went out completely.
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