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Static with computer speakers pentium 4 dimension 4700 series

I own a Dell pentium 4 processor 520 (Dimension 4700 series) with 2.8ghz that has been putting out horrible static through the speakers. I've tried unplugging and rebooting and I believe it's the subwoofer. A friend recently gave me a pair of speakers (harman/kardon) to try. Do I need a subwoofer to go with these speakers? My computer came with speakers attached to a subwoofer.
I need help!!!

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  • hartdanz Feb 09, 2009

    Thank you. Problem fixed!

  • twoblue Feb 09, 2009

    i've got this problem with my dimension 4700, and i've read several places that overheating of the CPU can cause static in the sound. several people have said that when they cooled their CPU more, the static went away. apparently 4700s have a heat problem, especially went in a small area or pushed against the back of a desk or wall. dell sent some of them out with an unusal fan configuration that they claim is intentional, but many people have fixed the heat problem by reversing the lower fan on the back of the unit to blow out of the box instead of sucking in. give it a google and you'll find a couple of step-by-steps for doing it yourself... I'm going to flip mine around sometime this week and see if it solves my static problem!!!



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I reversed my fan last night, and I believe it solved the static problem. Only time will tell, I suppose. When I first used the computer after flipping the fan, both fans suddenly were extremely loud and noisy and rattling. But now that I have had my computer running for about an hour or so, they got quieter and quieter and now are completely silent. (I can still feel the air blowing though). I suppose it realized that it wasn't going to overheat anymore and didn't have to run the fans so hard!

I consider my problem solved. I'll be back if it changes, but so far I highly recommend flipping the fan to run the other way. It was really very simple to do once I understood how to disconnect and reconnect all the parts! If anyone needs step by step instructions and they can't find them, please email me at timm100 [at] mail [dot] chapman [dot] edu. I am very new to this whole internal computer thing myself, so I know how confusing it can be!

Posted on Feb 14, 2009

  • twoblue Feb 15, 2009

    I'm back! Computer was on and running all day, no static in speakers at all!


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Dell 4700 Check the video card fan. Had one that was full of dust..Cleaned it and moved the sound card away from the video card.. this fixed my problem.


Posted on Feb 07, 2009


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Can i use Intel Pentium Dual-Core Processor E5500 2.8GHz 800MHz 2MB in a dell dimension 4700

i have the same probleme, you can see this use link,it mabe can sove your probleme

Apr 12, 2012 | Intel Pentium Dual-Core Processor E5500...

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I have a Dell Dimension 4700, the problem is that recently, i went to start it up, nothing would happen, the 4 ABCD lights don't light up, and i notice this steady amber light. So it was determined that a...

You can try to reseat the CPU (processor) chip. Inorder to do that you have to remove the heatsink and then reapply thermal paste (compound) to the surface of processor. The processor rarely goes bad.

Apr 09, 2011 | Dell Dimension 4700 PC Desktop

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The fan is making a loud noise on my Dell Dimension 4700. Should I keep using the computer or turn it off? Can the fan be replaced?

The fan is loud for a reason. It's spinning at top speed.

The reason it is spinning at top speed, is to try to keep the Processor cooled down.

A Processor has a thermal limit. A temperature it can reach, and no more.
If the temperature exceeds this thermal limit, the Processor turns off.

This is a Fail Safe feature to keep the Processor from burning up.
The reason the Processor is overheating is due to one of two factors, or both.

ONE: The computer is dirty inside. (To include the inside of the Power Supply)

The Dimension 4700 uses a computer case fan to cool the Processor.
A fan shroud is used to divert air over the Heatsink, which sits on top of the Processor.

Click on Processor in the list, then scroll down to Fan Assembly

Looking at the Heatsink sitting on top of the Processor, you'll notice part of it is a finned aluminum rectangle.
Heat is transferred to the fins where they radiate it away.

Air flows in-between the fins, and around the fins to help dissipate the heat. (Carry it away)

Dust, dirt, hair, etc., trapped in-between the fins, and on the fins will greatly reduce the cooling capacity of the Heatsink.

It also reduces the cooling capacity of the computer case fan, and the transference rate of the fan shroud.

Computer unplugged from power, observe Anti-Static Precautions, and use a can of compressed air for computers to clean out the inside of the computer.

[Anti-Static Precautions:

Your body carries Static electricity.
Static can fry out (Short Circuit) the hardware components inside a computer.

{Processor, Ram Memory, Harddrive, motherboard chipsets, graphics chipset, or graphics card chipset, etc.}

Relieve your body of Static BEFORE reaching inside your unplugged from power computer, AND before handling computer parts.

Computer on a table, computer unplugged from power, computer case open.
TOUCH the metal frame of the open computer case.

Should you leave your computer in the middle of working on it, upon your return be SURE to Touch the metal frame again ]

Pay special attention to the fins of the Heatsink.
Also pay special attention to the computer case Fan.
You can gently use Q-tips to break the outside 'crust', and then follow with a can of air.

(A Q-tip can be used to disturb the outside 'crust' layer. Just wipe it around, and do not be concerned with wiping off any gunk.
By breaking the outside layer of gunk, {'Crust'}, it is easier for the can of air to remove it. May take a few Q-tips as they unravel pretty easily.

Q-tips are good for getting into the 'crack' where the fan's blades meet the center hub. Also on the edges of the fan's blades.
Make sure the Center Hub, area where the fan blades meet the center hub, fan blades, and surrounding cage, are clean.)

TWO: The thermal paste has dried up.

Thermal paste is used in-between the top of the Processor's case, and the bottom of the Heatsink.

The bottom of a Heatsink, and the top of a Processor's case, are not perfectly smooth.

[ Intel Pentium 4 {Prescott Core} processors. Photos show the top of the Processor's case. The case is the silvery looking square. The green outer square is a circuit board the processor core is mounted to. ]

A microscopic view would show, 'Pits, Hills, and Valleys' in the surfaces of the top of the Processor's case, and the bottom of the Heatsink.

These imperfections create an Air Pocket.
Air is an Insulator, not a Conductor.

Thermal paste, (Also referred to as Thermal Grease), fills these voids.
Thermal paste is an excellent Conductor.

Thermal paste MUST always be used in-between the top of a Processor's case, and the bottom of the Heatsink.
(NOTE* If a thermal Pad is used, remove it throw it away.
They are JUNK, and can't be reused anyway)

Processors heat up when being used. They become Very Hot.
The constant heat causes the thermal paste to dry up.
Now heat isn't being transferred to the Heatsink as it should.
The thermal paste has lost it's conducive factor.

The solution is to THOROUGHLY clean the top of the Processor's case, and the bottom of the Heatsink, and PROPERLY apply fresh, new thermal paste.

The cost of a one-time, (One processor) application of thermal paste averages from $3 to $12.
Depends on what thermal paste you buy.

Using ANY fresh, new thermal paste, is better than using dried up thermal paste, or no thermal paste at all.

If you wish to know the proper procedure of cleaning, and applying thermal paste, please post in a Comment.

Dell Support > Dimension 4700 series desktop computer > Service Manual,


Oct 31, 2010 | Dell Dimension 4700 PC Desktop

1 Answer

I want upgrade my CPU from p4 520 to p4 660(2M L2 cache) on dimension 4700. I want to know if that will work on my pc. Right now i am operating on bios A05,and i want to know if i have to upgrade to bios...

For best results, you should run the Dell System Analyzer on your computer:

Updating the BIOS, while not difficult, is not usually recommended unless it will solve a problem. The reason for that is you must follow the instructions provided by the manufacturer exactly or you could render your computer useless.
If the Dell System Analyzer determines that you can upgrade to a P4 660, then go ahead and replace the P4 520. If the P4 660 doesn't work, then the best approach would be to re-install the P4 520, make sure the computer works, then update the BIOS after carefully reading and understanding all the instructions provided by Dell.

Sep 13, 2010 | Dell Dimension 4700 PC Desktop

2 Answers

Dell Dimension 4700 PC Speaker No Sound

Check to make sure all cables are connected. After this you will need to click on your sound card properties and set it to 5.1. which will allow all the speakers to play.

Please note you will need to have a card that supports 5.1 sound I do not believe the stock card in the Dell supports this feature which could be the problem.

Feb 05, 2010 | Dell Dimension 4700 PC Desktop

1 Answer

I bought a pentium 4 3.0 ghz 800 mhz & my

The motherboard chipset of the Dell Dimension 2300 Desktop PC, will not support a processor with an 800MHz Front Side Bus frequency rate.

Only Intel Pentium 4's that use a Socket 478, 1.75 Volts, and a maximum of a 400MHz FSB.

The Intel Pentium 4 HT 3.0GHz processor has an 800MHz FSB, (As you have already stated), and uses 1.475 to 1.55 Volts.

The motherboard chipset for that Dell Dimension 2300, is an Intel 845GL.

This list on Wikipedia, shows you parameters the Intel 845GL chipset supports,

Not a good outcome, sorry. Just stating the facts.

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Wanna Upgrade processor

from some research it appears it only supports the processor that is in it now.

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