Why won't my cube power up

Having same issue HELP

I found that the plastic housing can cause a cube not to start. If you press the power on button on the top and it does not light up the housing could be the problem. I have a great working cube and last week I got another one due to the seller listing it so cheep. It would not turn on the seller said is the reason he was letting it go so cheep. I tried every thing to get it to start, nothing worked. On a lark I put the main unit in my working cube and guess what it started up just fine. I do not know why and have not found any info on this kind of problem with the housing preventing a cube from starting on the web. You should also know I put my working cube main unit into the bad housing and it would not start. Maybe someone knows why this happens? I hope this info can help.

I think I had this problem back when I was still refurbishing my cube, and I believe the problem was bad ram.

Do you have multiple sticks? If so, try one at a time to isolate a possible bad one.

Here is a link to the service manual for the cube:

http://tim.id.au/laptops/apple/powermac/...

It has troubleshooting stuff at the end, and has been the best resource for me when working on my cube.