Question about Dell Dimension 8400 PC Desktop

Open Question

Dell 8400 dead

Hi when i pulled the power supply off 2 of the 4 pins are burned badly is the mb finished recom

Posted by on

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


1 Points

Related Questions:

1 Answer

Dell dimension 8400 pc desktop when pressed power botton orange light comes on and system not booting up

Needs attention from a tech. Could be anything at this point, bad ram, bad/dirty ram slot, failing power supply or motherboard, bad video card... I'll put my money on bad motherboard otherwise I hope you would have wrote that you are hearing beeps. Hope that helps you some.

Aug 10, 2014 | Dell Dimension 8400 PC Desktop

2 Answers

I have a Dell Dimension 8400 Series desktop that is totally dead. Nothing happens when power button is pushed. Of course it is plugged into a live outlet.

Possibly a bad power supply. Could aslo be bad hardware.

Depeding on how save you are with computers, depends on how far you might want to go with this.

But remove everything one at a time and try to start the computer. Until all you have is a motherboard, processor, fan, and power supply hooked up. If you are still not getting any power, try to swap the power supply first. If that doesnt work then either Motherboard or Processor.

Lastly, swap the power cable out to see if its a bad cable.

May 03, 2011 | Dell Dimension 8400 PC Desktop

1 Answer

My 6 year old Dell Dimension 8400 quit working completely.

Depending on the symptoms, you may have different faults.
Flashing Amber power LED, normally power supply
AAGG Diag LEDs normally bad RAM
Solid Amber Power LED, bad motherboard or Expansion card connected to it.
If you need a motherboard a Precision Workstation 370 motherboard is essentially the same and is available, (8400 motherboards are scarce)

Feb 05, 2011 | Dell Dimension 8400 PC Desktop

1 Answer

No power on dell e520 dimension

On the 20 pin connector, short the green wire to any black wire with a paperclip. This will force the power supply to turn on manually if the motherboard is not giving the correct "ON" signal.

Feb 26, 2010 | Dell Dimension E520 PC Desktop

1 Answer

Dell dimension 8400 will not start.

no man try to take out the modem ( last pci slot on the botom of the board) and see if you have any luck if not you going to need a new motherboard thanks and good luck

Oct 11, 2009 | Dell Dimension 8400 PC Desktop

3 Answers

Dell 8400 runaway fan no diagnostic lights and very ocassionally it starts normally

Which fan?, the cpu fan or the cpu fan?

Most Dell pc come with a below average power supply. I recommend replacing your power supply with a better one. Do a search on Google for a good replacement power supply for you Dell 8400.

Please rate response.

Feb 17, 2009 | Dell Dimension 8400 PC Desktop

1 Answer

Replaced dead power supply computer still dead

most power supplys are protected against faults when they are connected to damaged equipment
so it possibly just protecting its self

disconnect everything from the PSU except your MB

try to turn on

if your pc boots ok

re connect everythng else one thing at a time attempting to boot each time

when it wont boot you have found your fault

Feb 07, 2009 | E-Machines D2046 PC Desktop

4 Answers

Woes with Dell

If the power light is steady amber, a device might be malfunctioning or incorrectly installed.

Disconect fan , see if it starts.

Jan 13, 2008 | Dell Dimension 8400 PC Desktop

1 Answer

Burned pins on psu

the reason for the melting could be down to one or the other, i would deffinately change the motherboard as it may be the reason for the melting and just keep an eye on the PSU

Sep 25, 2007 | Dell Dimension 8400 PC Desktop

Not finding what you are looking for?
Dell Dimension 8400 PC Desktop Logo

Related Topics:

66 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dell PC Desktops Experts


Level 3 Expert

5660 Answers


Level 3 Expert

18258 Answers

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

Are you a Dell PC Desktop Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides