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All computer fans starts ok but trips with notice,

My HP computer fans start ok but trip within a few seconds with warning "CPU fan failure"

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You may hear the case fans running. Remove PC cover and check CPU fan and replace, it may not be running at full speed.

Posted on Sep 24, 2009


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Shuts down 2 seconds after powering on.

Don't know this exact server. But my guess it is either a heat issue or a power supply issue. Turn it on with the cover off. Check the CPU fan(s). If your CPU is getting too hot the system might be shutting down power to save it. If everything seems cool it might be the power supply I have seen it when the power supply fan goes out on the power supply and the caps inside start to sizzle. Voltage ramps up and fail.
Hope this helps.
Also, Something that has tripped me in the past. Make sure the power button is not stuck. I had a server that the power button stuck down and it would turn itself off. Took me 2 CPU fans and a power supply to figure that out. LOL

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My fan oven starts for a few seconds then trips , i have just changed heating element

Did you make sure that the element is not making contact with any metal after you put it in? That would cause whats happening in your situation.

Apr 25, 2012 | Ovens

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1999 3series e46 model. when starting in the mornings the secondary pump starts to (whine) for about 30 secs. once it stops all ok. have been told this uses more fuel. any suggestions as how to remedy this...

If it is so loud that you notice it inside the car, it is about to fail.
Usually when these fail prematurely, it is because the check valve has failed, so the fan slowly spins backwards with hot wet exhaust gas blowing through it all the time you are driving. This destroys the fan bearing, resulting in the noise you hear and the subsequent fan failure. The fan costs $420 at the dealer or $240 on line. The check valve is $125 at the dealer or $105 on line.
There is a place on eBay that rebuilds secondary pumps for Volvos and BMWs for about half the cost of a new air pump. They did one for one of my 328s last year. It works fine, but I have not driven that car very much since I put it in.
Replacing the fan is an easy do-it-yourself job, but the soft rubber mounts that hold the fan are fragile, so don't abuse them or you will be making a second trip to the parts store.
You might want to disconnect the line from the check valve to the fan and start the car to see if the check valve is leaking before ordering a new one. Also, if there is water in the fan when you take it off the car, the check valve has failed.
If you just eliminate that fan, the car will run the same. It will just make a little more carbon monoxide when you first start it, it will take a bit longer for the computer to go into closed loop operating mode, and the computer will set a code for failed secondary air fan.
The gas consumption associated with this fan is negligible. It takes only a few drops of fuel to quickly heat and light off the catalyst. You will never notice the difference in mileage.

Jul 19, 2011 | 2004 BMW 3 Series

1 Answer

The system fan is missing or is not working your system has been halted in order to avoid any dammage your system will power down after 3 seconds for hp vectra vl 420 plz help

If you're referring to the fan on the CPU , and it does not run when you turn on the computer , yes replace it. The system is protecting the CPU from overheating . If you're not sure if the fan is bad , remove the computer access cover to the main board , then , turn the computer on and see if the CPU fan starts to spin. If you notice the fan blades vibrating or jiggling but not spinning , then replace the fan motor assembly .

Sep 20, 2010 | Computers & Internet

1 Answer

Ran a 300 mile trip up to Pennsylvania mountains this weekend. 2001 Jeep Grand Cherokee ran fine. I did notice though that while driving with ac on I got a blast of hot air. Temp gauge was at 200 to 210 no...

Doesn't sound as though you have overheating issues.
With a 196 thermostat, a vehicle is designed to run at 200 to 210,and you were putting it under a load on your trip.
I don't know why you would think about changing anything,unless you were doing some trouble shooting, and a test you were performing, indicated a failed component.
I would change the thermostat, as preventative maintainance every five years, and watch for the fans to be working after a trip of five miles or so.
Your A/C may have been switched off, by the various computer systems, to prevent overheating, or it may be starting to have it's own issues.

Sep 20, 2010 | 2001 Jeep Grand Cherokee

1 Answer

I have a Carrier AC unit with a heat pump. I noticed that it wasn't cooling and the circuit breaker had tripped. When I reset the breaker and try to start it again, it trips againafter 10 seconds. The...

Check with your contractor to see if their repair is warrantied. If it is not call someone who carries a warranty and satisfaction guarantee on repairs. It is likely that you got a bad capacitor, however, this typically will not trip a breaker. It's possible that other issue(s) caused the capacitor failure.
How old is this unit?

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1 Answer

Neff U1410 main oven trips the main RCD. Occurs

I have a u1421 with the same problem! I notice the fan doesnt run too well, sometimes it doesnt run at all, needs a prod to get it running. I suspect with no fan, that the element gets far too hot, and then starts to leak to earth, tripping the RCD. I'm gonna try buying a new fan motor - you should ckeck if your fan is running full speed OK.

Oct 25, 2009 | Neff U1421 Double circotherm Electric Oven

2 Answers

My Fujitsu Siemens Scaleo P tower fails to boot up, sometimes shuts down after a few seconds, no output to monitor. Can you help My computer works fine untill one morning it shut down with no warning....

pop the CPU, take a closer look athe chip and the socket, make sure there is nothing can create a short of creating any kind of heat. if you don't find anything there, I suggest a new CPU in order.

Apr 17, 2009 | Fujitsu Siemens Computers & Internet

1 Answer

Compressor wont start

It is probably a failed run capacitor for the compressor. Without the capacitor, the motor can't even try to run, but it will draw extreamly high amperage until it trips the thermal overload (avarage trip time 5-10sec) after it has a few second for the safety to cool off, it will try again. Either that or the compressor truly is seized

Jun 22, 2008 | Coleman Mach III Air Conditioner

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