Power Supply and CPU fan issues

PJRempel · 05-14-2008, 01:58 PM

I am working on an emachine T2885. The owner said it had been running fine, and after returning from a trip, it wouldn't boot. I have tried 2 other power supplies, which turn the light on the motherboard on, and then the CPU fan runs for about 2-3 minutes, but I can't boot the machine. It appears they had replaced the memory at some point with DDR PC2700, but the specs for the motherboard say it should be DDR PC2100. I substituted the correct ram, but still can't boot. Does anyone know the next step(s) to try? Thanks in advance!

dai · 05-14-2008, 02:12 PM

did you do a cmos reseat after changing the ram

PJRempel · 05-14-2008, 02:20 PM

Yes, and I tried a new battery as well

dai · 05-14-2008, 03:05 PM

do you get the error beep code if you start with the ram removed

PJRempel · 05-14-2008, 07:13 PM

No change on removing the RAM. When I plug the power cable into the PSU, the LED on the motherboard turns on, and the power supply fan starts up. Pressing the power does nothing. Fan turns off on its own after about 2 minutes

PJRempel · 05-14-2008, 07:15 PM

I meant to say the CPU fan turns on when plugging in the cable, not the PSU fan

dai · 05-15-2008, 08:42 AM

unless the psu fan is one that only comes on when required the psu is no good

PJRempel · 05-15-2008, 01:02 PM

I was quite certain that the psu is no good, but the other 2 psu's I tried didn't power on the machine either. I swapped out the ram, the cables, the cmos battery, checked and rechecked connections, disconnected HD, DVD, FDD, all to no success with a working PSU. The power switch is fine.After doing some looking around on the web, there seems to be some history of the bestec power supplies failing on the emachine T2000-T3000 series, which has caused motherboards to fail. Was there anything I've missed or need to try?

dai · 05-15-2008, 05:49 PM

emachines are renown for their failing psu's and m/b's

PJRempel · 05-15-2008, 06:25 PM

so do you think I have covered it all?

dai · 05-15-2008, 06:55 PM

are there any error beeps when starting with the ram removed

PJRempel · 05-15-2008, 09:32 PM

No. No beeps

dai · 05-15-2008, 10:52 PM

lookks like the m/board as long as the psu is ok

PJRempel · 05-16-2008, 04:54 PM

Thanks for your help.

05-14-2008, 01:58 PM	#1 (permalink)
PJRempel Registered User Join Date: May 2008 Posts: 8 OS: XP SP2	Power Supply and CPU fan issues I am working on an emachine T2885. The owner said it had been running fine, and after returning from a trip, it wouldn't boot. I have tried 2 other power supplies, which turn the light on the motherboard on, and then the CPU fan runs for about 2-3 minutes, but I can't boot the machine. It appears they had replaced the memory at some point with DDR PC2700, but the specs for the motherboard say it should be DDR PC2100. I substituted the correct ram, but still can't boot. Does anyone know the next step(s) to try? Thanks in advance! Last edited by PJRempel : 05-14-2008 at 01:59 PM.

05-14-2008, 02:12 PM	#2 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 40,334 OS: vista 32x ultimate retail	Re: Power Supply and CPU fan issues did you do a cmos reseat after changing the ram __________________

05-14-2008, 02:20 PM	#3 (permalink)
PJRempel Registered User Join Date: May 2008 Posts: 8 OS: XP SP2	Re: Power Supply and CPU fan issues Yes, and I tried a new battery as well

05-14-2008, 03:05 PM	#4 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 40,334 OS: vista 32x ultimate retail	Re: Power Supply and CPU fan issues do you get the error beep code if you start with the ram removed __________________

05-14-2008, 07:13 PM	#5 (permalink)
PJRempel Registered User Join Date: May 2008 Posts: 8 OS: XP SP2	Re: Power Supply and CPU fan issues No change on removing the RAM. When I plug the power cable into the PSU, the LED on the motherboard turns on, and the power supply fan starts up. Pressing the power does nothing. Fan turns off on its own after about 2 minutes

05-14-2008, 07:15 PM	#6 (permalink)
PJRempel Registered User Join Date: May 2008 Posts: 8 OS: XP SP2	Re: Power Supply and CPU fan issues I meant to say the CPU fan turns on when plugging in the cable, not the PSU fan

05-15-2008, 08:42 AM	#7 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 40,334 OS: vista 32x ultimate retail	Re: Power Supply and CPU fan issues unless the psu fan is one that only comes on when required the psu is no good __________________

05-15-2008, 01:02 PM	#8 (permalink)
PJRempel Registered User Join Date: May 2008 Posts: 8 OS: XP SP2	Re: Power Supply and CPU fan issues I was quite certain that the psu is no good, but the other 2 psu's I tried didn't power on the machine either. I swapped out the ram, the cables, the cmos battery, checked and rechecked connections, disconnected HD, DVD, FDD, all to no success with a working PSU. The power switch is fine.After doing some looking around on the web, there seems to be some history of the bestec power supplies failing on the emachine T2000-T3000 series, which has caused motherboards to fail. Was there anything I've missed or need to try?

05-15-2008, 05:49 PM	#9 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 40,334 OS: vista 32x ultimate retail	Re: Power Supply and CPU fan issues emachines are renown for their failing psu's and m/b's __________________

05-15-2008, 06:25 PM	#10 (permalink)
PJRempel Registered User Join Date: May 2008 Posts: 8 OS: XP SP2	Re: Power Supply and CPU fan issues so do you think I have covered it all?

05-15-2008, 06:55 PM	#11 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 40,334 OS: vista 32x ultimate retail	Re: Power Supply and CPU fan issues are there any error beeps when starting with the ram removed __________________

05-15-2008, 09:32 PM	#12 (permalink)
PJRempel Registered User Join Date: May 2008 Posts: 8 OS: XP SP2	Re: Power Supply and CPU fan issues No. No beeps

05-15-2008, 10:52 PM	#13 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 40,334 OS: vista 32x ultimate retail	Re: Power Supply and CPU fan issues lookks like the m/board as long as the psu is ok __________________

05-16-2008, 04:54 PM	#14 (permalink)
PJRempel Registered User Join Date: May 2008 Posts: 8 OS: XP SP2	Re: Power Supply and CPU fan issues Thanks for your help.