Unit powers up, fan shuts down no light.

sounds like it is overheating -- are the fans installed pointing the correct direction, all spinning up well?

sounds like a power supply problem

Test your PSU power supply unit or replace it if your power supply units fan is not working your PSU is faulty

http://pcsupport.about.com/od/toolsofthetrade/f/powersupplytest.htm

One bad lead can cause a computer to continue on a cycle of restarting or to shutdown or fail to detect/ boot up a computer hard drive

Test all leads that attach to your hard drive power and data cables IDE SATA
the leads from your MOTHERBOARD TO YOUR HARD DRIVE make sure they have a secure dust free connections and are not faulty or just replace them they could be faulty

hope this helps

Some times the new part is bad. If you put the old one in do all the new symptoms go away if they do take the part back.

Try this
unplug plug the power cord and remove the battery and hold the power button for 45 seconds,Then reinstall the battery and and try to start the computer,

if it fails to start
unplug plug the power cord and remove the battery and hold the power button for 45 seconds and
remove the memory and any usb devices that may be plugged in,then start it,

If it starts

Allow it to load completely and then shut it down and install one memory stick and restart, if all is well after if loads completely, shut down again and install the other memory stick and restart, if all is well again wait until it loads completely and then plug in and allow to load each of the usb devices you may have

try removing the battery and just use plug power only if it boots normally then change the battery and the change the power supply unit as well I would just start with the power supply unit first then see if the battery charges up if not the battery is bad replace it. Now if the computer will not start with the battery removed then you have a power supply issue.
Change and replace it. Hope this helps. Also when computer lap top get hot they will shut down to protect the computer wait and let it cool down then try to restart your computer. If this does work and the lap top restarts normally get a fan cooler that is USB powered and the lap top sits on top of it. Also make sure the fan is running and is not stopped. Clean and dust it out once in awhile. I hope this assists you with your problem. John

Sounds like an overheating problem to me. Try taking off the side of the case, and starting the unit. Pay close attention to the fans that you can see. leave the computer running, and continue to check the fans. If a fan is going bad, not working, or going to slow, then the processor will overheat, and shut off the computer. Bad fans are easy to replace, just make sure you get the right size, with the right plug. This is just one possible reason for your problem, a further troubleshooting of the unit is needed...possible bad RAM, or video card failure can cause this mysterious shut down.

Just a long shot, but...

I have an epson 9000i that did the same thing. Turns out that unit has a small fan (I think 60mm) right next to the power supply to keep it cool, in addition to the large fan that exhausts past the lamp. The fan runs non-stop as long as the unit is powered-up for two reasons I can think of - keep the power supply a little cooler, and the lamp a little warmer so there's not such a temp difference when it powers-up. Long story short, that fan had died. I replaced it with an aftermarket 60mm fan and it's been working fine ever since. Hope this helps.

Bob

try pressing and holding the enter button on the projector for about 30 seconds - this resets it. It worked for me!!