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Mac Forum / General / Portable Macs / February 2005iBook trouble
My wife's iBook (16Vram, 700 MHz) produced weird screen behaviour for a moment (a few tries & moves of the display to see if this was the cable problem) and then crashed (which it has almost never done before). Now it won't start: initial "bong" as usual, disk spins up but no apparent activity after that. neither the internal display nor the external display port will show any signal. Trying to boot it into Firewire-target mode (keep "T" down while powering up) produces the same non-action and my other machines won't see it as a disk (although they may be seeing that *something* is connected... can't quite tell). Is this consistent with an LVDS cable problem? i recall that some old Macs would not boot with no display connected... Uli > My wife's iBook (16Vram, 700 MHz) produced weird screen behaviour for a > moment (a few tries & moves of the display to see if this was the cable [quoted text clipped - 10 lines] > > Uli Does the HD do anything more than spin up? I.e. can you hear the drive access data?  SignatureLater. johajohn@indianahoosiers.edu Let 'indiana' be a 'noln', and 'hoosiers' be a 'solkk'. Leave only the 'noln' and .edu after the @ to reply . > > My wife's iBook (16Vram, 700 MHz) produced weird screen behaviour for a > > moment (a few tries & moves of the display to see if this was the cable [quoted text clipped - 13 lines] > Does the HD do anything more than spin up? I.e. can you hear the drive > access data? Nope, no head movement can be heard after the initial spin-up & "settling" (what most drives always do on their own). When it worked I could always hear the accesses during boot etc. Uli. > > > My wife's iBook (16Vram, 700 MHz) produced weird screen behaviour for a > > > moment (a few tries & moves of the display to see if this was the cable [quoted text clipped - 17 lines] > "settling" (what most drives always do on their own). When it worked I > could always hear the accesses during boot etc. In that case, I'd say it was a problem more basic than the LVDS cable, PMU, RAM, CPU, logic board maybe. From what I see here, you're not even getting to the point where the computer is generating anything to display, never mind having trouble displaying it. My Pismo displayed similar symptoms when it's CPU died (diagnosed by swapping CPU out, in my case, the problem moved with the CPU). FWIW SignatureLater. johajohn@indianahoosiers.edu Let 'indiana' be a 'noln', and 'hoosiers' be a 'solkk'. Leave only the 'noln' and .edu after the @ to reply . > > > > My wife's iBook (16Vram, 700 MHz) produced weird screen behaviour for a > > > > moment (a few tries & moves of the display to see if this was the cable [quoted text clipped - 27 lines] > swapping CPU out, in my case, the problem moved with the CPU). > FWIW Thanks everyone for their input. It nudged me toward the right action: take it back to my friendly Apple Genius. The Genius identified it from my description immediately as the chip problem that has plagued this particular model series & shipped it off to Apple to get a logic board replacement under the repair extension program. Hope they accept his conclusion. Uli > My wife's iBook (16Vram, 700 MHz) produced weird screen behaviour for a > moment (a few tries & moves of the display to see if this was the cable [quoted text clipped - 8 lines] > Is this consistent with an LVDS cable problem? i recall that some old > Macs would not boot with no display connected... sounds like motherboard issues (also part of the ibook problems). you have until mid-march to get it fixed, unless they extend it again. worst case is they say no... <http://www.apple.com/support/ibook/faq/> did you try booting from the CD? of course, you have to open the CD port with a paper clip first insert the CD and start with the letter "c" held down if not, bummer! You might try removing any RAM that has be installed just to eliminate bad RAM as the fault. You might also hold down apple-option-P-R right after hearing the first startup chime and continue holding the 4 keys until the next chime. I really doubt that this will do anything, but it doesn't cost anything to try. |
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