My emac g4-1.25gh-80gig-superdrive-56k-220v that i got of hard rubbish starts up without a chime and the light at the front of the computer does not come on and there is no pic but the ports work and the fan goes when i turn it on. Since i got it of hard rubbish i don't have a apple keybord and mouse i'm useing a logitech wireles keybord and mouse and i have no re install disks or an lepord or tiger or others disk that sports the g4 proseser.
Hi, about all you can do without more Discs is...
Does it Safe Boot from the HD, (holding Shift key down at bootup)?
Does it boot into any of these modes?
Target mode...
http://support.apple.com/kb/HT1661
Does it boot to Single User Mode, CMD+s keys at bootup, if so try...
/sbin/fsck -fy
Repeat until it shows no errors fixed.
(Space between fsck AND -fy important).
Resolve startup issues and perform disk maintenance with Disk Utility and fsck...
http://docs.info.apple.com/article.html?artnum=106214
We might get clues with verbose mode...
Thanks for the anser but it still won't dispay anything i the hard drive and the superdrive gets power and don't seem to be haveing errors i'm going to give you correct answer so you get good points but it dident resolve my problem. I have tryed takeing out difrent ram cards and all that stuff i currently have the date and time battory out which i'm going to put back in in 24 hours which was on a comment for a youtube vid and the vidio cable inside the computer lokks fine and is fully in its slot but the CRT has a cleer spot ontop of it inside the computer. i would plug it into my tv but i only have a minydisplayport adapter to VGA not minny DVI or what ever the portis thanks anyways.
Many 1.25G eMac were plagued with a near-fatal logic board defect. Look at your serial number (inside the optical drive door) and see if it falls within these ranges:
If it does, you likely have the curse. Apple maintained a repair extension program for this issue but it expired over two years ago. If this is the issue, there is basically no practical way to fix it today without spending the cost of 2 to 3 used eMacs.
NOTE: if you Mac is a refurb, the serial number will not look like the about formats (starte with R or RM instead) and the list doesn't help.
Sometimes you can see the problem through the RAM door on the bottom of the computer. If you see capacitors with brown or black goop on top as in those images:
[click image to enlarge if needed]
then you are pretty much out of luck, unless you live within driving distance of Eugene, Oregon. A place there repairs rather then replace the logic board for about US$130 if you don't have to ship, which could easily add US$100 to the equation.
Even if the caps under the RAM door are unaffected, there may be ones you can't see that are. It's a tough problem.
I think Allan has the correct answer, which I was slowly working towards, but not with all the great info he includes. Many eMacs suffer Video problems.
when i pulled it apart the diodes all looked fine without a mark. and to just inform that the logitech keybord i have has not pard whith the mac so i can't do anything involving kebord and mouse i tryed replaceing the harddrive but no change and the battery inside i left out four 24 hours and no change i also tryed the pram butten thingy for a second and i cleend the fan all heatsinks are still on includeing the one covering the g4 chip. So i'm not shore whats wrong whith it thanks anyway
emac no pic
