How can I tell if my motherboard and/or logic board is fried?

Good evening all, I was just wondering if anybody can tell me the way to find out if my old power mac mobo is fried, or weather it's the logic board or the power supply. When I try to boot it up there is no start up chime, there is no white power on light and the red light doesn't even come on. It's one of those bad liquid cooled models but it hasn't leaked. I really don't have the luxury of spending a lot of money just to have someone diagnose the thing for me. I would be willing to replace the power supply for the price that was quoted to me off hand from an apple tech, but the person on the phone wouldn't let me talk to the tech so he wouldn't answer my ? and I despise the genius bar kids who don't seem to know the hard core techie stuff and I tend to talk circles around them. Sorry if there is already a post on this (I searched but came up with nothing) or if this is a dumb or fruitless effort on my part but no clear answers yet found in the magical internet.
Cheers and thanks in advance for your responses!
-Chief

Can you count the beeps or flashes of the Power Button?
1 beep = no RAM installed
2 beeps = incompatible RAM types
3 beeps = no good banks
4 beeps = no good boot images in the boot ROM (and/or bad sys config block)
5 beeps = processor is not usable
In addition to the beeps, on some computers the power LED will flash a corresponding number of times plus one. The LED will repeat the sequence after approximately a 5-second pause. The tones are only played once.
Note: In this case, a flash is considered to be 1/4 second or 250 ms or greater in length.
http://support.apple.com/kb/HT1547
Power Mac G5 (Late 2005) computers have six or seven built-in diagnostic LEDs on the main logic board that can help Apple Authorized Service Providers (AASPs) troubleshoot certain issues. These LEDs are located to the left of the top bank of DIMM connectors (where your computer's RAM is installed):
http://support.apple.com/kb/HT2652

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Hi,
This may sound stupid but...
I have a MSI motherboard in my machine but do not know what it is. I bought the machine from PC world (DON'T LAUGH) and it is still under guarentee. How can i tell what the motherboard is without openin the case?
The spec is a
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Quote
Originally posted by Leighroy2003uk
HI all
jeffPH thankz for the replies but its impossible that I have a 6533 mobo as I have a Pentium 4 2.53 GHZ on a 533 FSB. (That board dont support it) Anymore suggestions???
Cheers
Leighroy
according to the product specs here
specs
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This question was solved.
View Solution.

Thexn, welcome to the forum.
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Please click the "Thumbs up + button" if I have helped you and click "Accept as Solution" if your problem is solved.
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This is not clear, especially when you say
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Disk Sleep Timer (Minutes):    10
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