I have read your articles about opening the iMac - but the bottom of my computer is not like the one described in some of your articles. The 3 screws are closer to the memory slot (not near the sides of the computer) and the screws come out completely (easily). The back does not lift off easily. What needs to be done. (I suspect my power supply is going and want to check it out.)
I also had the same issues. The cord when i would jiggle it out slightly then push back in would restart the computer. I truly wouldn't mess with it too much. What it was for me was simply giving it a dedicated outlet for some odd reason. However, to remove the back. Lay computer screen down on a towel. Lossen the screws, they do not come out, mine didn't. Remove the panel and that is that. The entire back did not come off fo me, jus the panel to add more memory.
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Hi David.Forget adobe and use Preview - it's installed in your imac.Single click a document. then go to File - Get Info in the menu bar.Near the bottom of the window that opens you will see thisChange the bit where it says Open With, to Previes and then click the button underneath that says Change All. This will change all Adobe PDF files and other PDF files so that they open with preview - that's how it works on all the macs here, no Adobe Reader at all.
Check for blown capacitors on the logic board and power supply. If you have signs of blown capacitors you will have to replace logic board or power supply.
The trick is getting the computer open.
Stick a credit card in the back vent at the top of the display.
Their are two tabs one and each side of the vent push forward
unscrew the screws at the bottom.
sit it up facing you and pull the top to you. be careful of the isight cable at the top.
you will need to unscrew the LDC from the housing be careful of connected cables
and check under for the blown caps.
It is best to check with an Apple store, assuming there is one within 100 miles or so, especially if you are under AppleCare, yet--unlikely. My 20" iMac G5 gave up the ghost a year ago. Their cost to repair/replace the logic board was >$800. I've heard 3rd party as low as ~$500. I decide to change to an MacBook 13" (Early 2009 white, then current) and love its convenience.
Try the Macintosh boards where I have posted http://discussions.apple.com/category.jspa?categoryID=134 "Apple - Support - Discussions - iMac G5". No luck for me though.
If you have the early G5 that I have, pull power plug and any cables, place face on non-scratching surface, rotate 1/2(?) turn the 3 screws on the bottom, lift off the back and stand, use the power cord to try to start it. There is a button for this but varies with models. If only one LED lights or 2 for a short time you may have my problem. First, after the back is off check if the capacitor tops are bulging. If so that is a known repair, but its coverage expired.
In order for a Mac to open files generated on a PC, you must have a program capable of reading these files. The new version of Microsoft Office defaults to saving files in a new format which is not compatible with earlier versions. This can be rectified by 'Back Saving' files to an earlier version of Office in the 'Save' menu. If you have files that you know can be opened with an application that is installed on the Mac, ctrl/click (right click) on the file and chose 'Open With' from the drop down menu. This will allow you to choose the application.