Question about Sunon (16-02-006) Fan Kit

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I need a circuit diagram about heatsink and fan of the computer.

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The heatsink doesn't use electricity, and the fan just has a motor inside that spins the blades, with a positive and negative wire going to it. Not much of a diagram to make...

Here's how a heatsink works though:

From my home site :D

Posted on Apr 28, 2009


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You will need to contact JVC online, customer support and the technical department to see if they can provide at least download on the circuit diagram. The powered sub from your description has a short, probably the main ic that is heatsinked.

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My presario cq50 210us shuts off after cleaning out fan and heatsink. I used your diagram to disassemble and it was very helpful but now I still can't run computer long enough to do any diagnostics. I had...

If you removed the heatsink you probably need to clean off the thermal paste and reapply before putting the heatsink back on. If the old thermal paste dried out (it generally does), it won't make good contact to remove the heat from the CPU and will over heat and shut off to protect itself.

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My optiplex sx280 have when is starting show a message "fan 1 failure"

if that's the error mesage you'll probably need to replace the CPU fan, assuming that's Fan 1. Another option is to open up the PC, and dust it off with a brush of some kind, especially the fans on the CPU, graphics card and power supply.

Dec 21, 2010 | Dell OptiPlex SX280 PC Desktop

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I don't know technical terms but there is a 4screw x that holds the sink to the mother board just to the right of the x is a small square over a chip is the square super to have a pad on it or no pad and...

Let me see if I can decipher what you have stated killa_klowns, and offer a solution.

1) The Processor has a Heatsink on it, or a Heatsink/Fan combo. Depends on what the computer manufacturer designer wanted to implement.

{Some computers have a Heatsink/Fan combo sitting on the Processor.
Other computers just have a Heatsink sitting on the Processor, and air is provided by a Front computer case fan pushing air through a plastic cover onto the Heatsink}

Typical design for a Heatsink/Fan combo (Stock design. LGA 775 processor socket. Also, not a gamer type of rig),

Photos showing typical Intel Pentium 4 processors. Shows the top of the Processor's case that the Heatsink sits on,

Where the headings state > Specifications - Pictures (5) - CPU ID (1) - Comments (15),
click on Pictures (5)

Thermal Paste should be used on the top of a Processor's case.
If there is a Thermal Pad, take it off, and fly it at the cat.
They're JUNK!

[ Always Thoroughly clean the top of a Processor's case, and the bottom of the Heatsink, before applying fresh new Thermal Paste. Same thing for every chipset.

> Observe Anti-Static Precautions A Processor is the most susceptible hardware component to Static shock.

Use a plastic scraper to clean the top of the Processor's case, and the bottom of the Heatsink.
I use an old credit card.

Then use Q-tips dipped in Isopropyl Alcohol (Rubbing alcohol) to clean the top of the Processor's case, and the bottom of the Heatsink.
May take several Q-tips dipped in alcohol. Usually a gooey mess.

Isopropyl Alcohol is EXTREMELY FLAMMABLE!
Use in a Well ventilated area with No sparks or flames present ]

The next chipset in line to use a Heatsink is a Northbridge chipset.
Termed Northbridge, for one, because in relation to how it is sitting on the motherboard, it is to the North of the motherboard.

On the motherboard the Northridge chip sits below the Processor.

The Northbridge chip may, or may Not have clips which hold the Heatsink on.
When no clips are used, > Thermal Glue is used to hold the Heatsink on.

{The motherboard chipset is the Northbridge chip, and the Southbridge chip.
Note* This info does Not apply to motherboards that support the Intel Core i3, i5, i7, or i9 processors}

The Super I/O chipset does Not use a heatsink.

Motherboard diagram, }

Tell me what the motherboard manufacturer name, and Model Number is, and I can give you more detailed info about that motherboard.


Dec 04, 2010 | Sunon (16-02-006) Fan Kit

1 Answer

My monitor is not booting up but powered up, what is the problem? the fan is real loud but nothing else works

I see this is your second posting. Good for you in adding the additional information.
This may be rather lengthy genevacotton, so grab something to drink, and sit back.

The cooling system for a desktop computer consists of air flow through the computer case.
Air is brought in from the Front towards the Back of the computer. (Or for some gamer computers, through the top, or side, and out of the back)

Air helps to cool the hardware components inside the computer.
A Processor is one of the two main components to develop the most heat.

[ Below shows a typical Intel Pentium 4 processor. Operates at a maximum frequency rate, ('Speed') of 3.0GigaHertz,

Under the bold black heading > Intel Pentium 4 3.0GHz RK80546PG0801M ( BX80546PG3000E),
look at the tabs >
Specifications, Pictures (3), CPU ID, and Comments (0)

Click on > Pictures (5)

You can click on any of the photos to enlarge.

The photos show the top view of a Processor.
The silvery looking square case in the middle is the Processor chipset.
The Green square surrounding it is a circuit board.

Click on the third photo down. The one under 2008-10-05 14:56:45

Holding that circuit board up off of that flat black surface, are pins. These you do not see in the photo.
For this particular Intel Pentium 4, there are 478 pins.
This Processor fits in a Socket 478 processor socket.

The photo shows the top of the Processor's case, with No Heatsink sitting on it.

This is a typical Heatsink/Fan combo,

The Heatsink is the aluminum looking square object under the fan.
Your particular desktop computer may not use a fan on top of the Heatsink.

It may have a Fan in the front which draws air through a plastic tuned port.
The plastic tuned port in turn, then goes over the Heatsink sitting on top of the Processor.

Case in point with all of the above prattle?

The Thermal Paste used in-between the top of the Processor's case, and the bottom of the Heatsink, has dried up.

The top of a Processor's case, and the bottom of a Heatsink, are not perfectly smooth.
A microscopic view would reveal 'Pits, Hills, and Valleys'.
When the two surfaces of the Heatsink's bottom, and the Processor's top are put together, the before mentioned imperfections create Air Pockets.

AIR is an Insulator. Not a Conductor.
Thermal Paste is a Conductor. It conducts heat from the top of the Processor's case to the bottom of the Heatsink. and fills in the imperfections.

When thermal paste dries up it looses it's conducive properties.

The fans are designed to spin at an RPM, (Revolutions Per Minute), that is in compliance with the needed cooling for the Processor.
Processor isn't running very hard, fan/s spin at normal speed, (RPM)

Processor is running hard from multiple programs running, or intense games, the Processor heats up, and the fan/s spin faster.

Whenever the Processor heats up past it's thermal limit, (Maximum operating temperature), the fan/s spin faster.
If the Thermal Paste is dried up, the Heatsink, and Fan cannot cool the Processor properly.
The signal is given to the fan/s to speed up, but they still cannot cool the Processor.

The Processor overheats, and shuts off. The fans still spin at max RPM.
No computer operating, fan/s spinning at high RPM.

Nov 15, 2010 | Computers & Internet

1 Answer

My mother board is working some time 5-7 min and afte 5-7 min mother board is turn off and mother is turn on not turn on

1) Is the computer dirty inside?
When a Processor overheats it turns off. This is a built-in Fail Safe feature.
Keeps the Processor from burning up.

The Heatsink sitting on top of the Processor, and the Fan sitting on top of the Heatsink, keep the Processor within a thermal limit. (Temperature)
If they are dirty, the cooling capacity of these two components drops tremendously.

[ Typical construction of a Heatsink is a plate of metal that has tall, thin fins protruding from it.
The plate of metal absorbs heat from what ever object it is placed against. (In this case a Processor)

The tall, thin fins absorb heat from the plate, where they then radiate the heat away.
If a fan is used along with a Heatsink, the air flow from the fan draws heat away from the fins.
{Older computers did not use a fan along with the Heatsink.]

Typical example of a Heatsink/Fan combo,

Some computers do not have a Fan placed on top of the Heatsink.
A computer case fan in the front is used.
The fan pushes air through a plastic port, which covers the Heatsink.
(Think tunnel. Plastic port is a U shape)

Computer unplugged from power, computer case open, Observe Anti-Static Precautions.
Use a can of compressed air for computers, and clean the fins out of the Heatsink, and the fan's blades.

You may also find that using Q-tips to break the outside 'crust' will help.
The Q-tips are not used so much as to remove the dirt, dust, etc. But to break the outside surface so the can of air can remove it.

2) Thermal Paste: (Also referred to as Thermal Grease and Thermal Compound)

This is applied in-between the top of the Processor's case, and the bottom of the Heatsink.
It MUST be there, and in a gooey state.

Thermal Paste is used to transfer heat from the top of a Processor's case, to the bottom of the Heatsink.

The top of a Processor's case, and the bottom of a Heatsink are not perfectly smooth.
A microscopic view would show small 'Pits, Hills and Valleys'.

When the two surfaces of the bottom of a Heatsink, and the top of a Processor's case meet, these imperfections create an Air Pocket.

Air is an Insulator. Not a Conductor.
It insulates the heat from transfering from the top of the Processor's case, to the bottom of the Heatsink.

Thermal Paste is a Conductor.
It conducts heat from the top of the Processor's case to the bottom of the Heatsink.

Thermal paste can dry up. When it is dry it looses its conducive properties.
Check the thermal paste.

You have to Properly clean the top of the Processor's case, and the bottom of the Heatsink.
There must be NO old thermal paste left.
Then new, fresh thermal paste is applied Properly.

Thermal Pad;
A cloth like material that looks like a thin pad. Used on some older computers to take the place of thermal paste.
These are Junk, should be removed, and thrown away.
Once you remove the Heatsink to look, you can't reuse a thermal pad anyway.

3) You may have a bad Power Supply.
Power Supply's have Electrolytic Capacitors inside them. They are used as Filters. Used in the Input stage, and Output stage of the Power Supply.

Electrolytic Capacitors can break down over time to an unusable state.

{Electrolytic Capacitors DO break down. The design engineer knows this. After a given time they break down to a 50 percent level. The design engineer takes this into effect, and uses capacitors that are 50 percent better than needed}

The Electrolytic Capacitors used are Radial Aluminum Electrolytic Capacitors.

For simplification, let me state that they have an outside case made of thin aluminum.
Shaped like a 'Coca-Cola' can.
Inside this case is Electrolytic Paste
When the paste breaks down it forms a gas. Hydrogen gas.

The gas expands, and pushes paste out. The paste oozes out. (Pushes the paste against seals of the case, and breaks the seals)

So much paste loss, and the capacitor operates at a reduced level.
Too much paste loss, and the capacitor fails.

A weak, or a few weak capacitors can produce a weak voltage power rail in the Power Supply.
When they work good, the Power Supply produces power as it should.
When they don't, the Power Supply does not produce enough voltage, and the Processor turns off.

4) Motherboard;

Electrolytic Capacitors again.
This time they are used in the motherboard voltage regulator circuit.
Part of what the motherboard voltage regulator circuit does, is to regulate voltage to the Processor.

The Processor must have a Steady, 'Clean', supply of voltage.
A Processor has a VERY small tolerance range for voltage that it operates in.
To little, and it turns off.

Visual signs of capacitor failure,

For questions about the above statements, or comments, please post in a Comment.


Nov 08, 2010 | Intel Motherboard

2 Answers

My dell dimension E310 had a burning smell shut down now it has an orange light and won't go on

Something has short-circuited and burned.
It could be the power-supply.
It could be the motherboard.
Disconnect the AC power, and remove the side-panel.
Look for burnt wires, or other damage.
Then, take the desktop computer to a computer-store, and get them to trouble-shoot, and to suggest replacement parts.

Jul 18, 2010 | Dell Dimension E310 PC Desktop

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