G4 Dual 1GHz MDD will not power up... button lights up when pushed, but thats it???

Hello. I'm new here, unfortunatly my first threads is thus:

I have a G4 1Ghz MDD, it has been working fine. This morning i switched it on, all fine. Then, some hours later, i switched the plug off at the wall. Now, i cannot recall if the computer was on or off, sleep mode is enabled, so i didnt notice. Anyhow, now it wont turn on. The power button lights up when i push it, but htats its. No fan noise, no hard drive noise, no nothing.

Any ideas? where do i go from here? the warrenty has long expired.

thanks.

MovieCutter said:

Open your case, and there is a small brown button located on the motherboard near what looks like a short AA battery. Hold this down for about 10 seconds with the computer unplugged and that SHOULD do it (cost me about $50 for AppleCare to tell me this a few years ago).

Click to expand...

What is it? like a fuse or something?

Well, it worked. thanks guys!