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How do i find out which one is the power wire

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On the head unit its yellow. if you need to know n your vehicle send me year make and model

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No power to fuel pump


hi darlene.
this is all i could find.
Sounds like you might have an electrical issue. If all 4 wires on the relay had power, there is something wrong with the wiring. The relay wires should have ground on two wires, power on one wire and switched power on another wire. ... The wire coming from the fuel pump is the other ground wire.3 Feb 2016

Q: No power to fuel pump ' YourMechanic Answers

https://www.yourmechanic.com/question/no-power-to-fuel-pump_2
Isai RodriguezAutomotive Mechanic23 years of experienceTHANK ISAISounds like you might have an electrical issue. If all 4 wires on the relay had power, there is something wrong with the wiring. The relay wires should have ground on two wires, power on one wire and switched power on another wire. To activate the fuel pump the computer actually connects one of the ground wires to complete the circuit and send power to the fuel pump. The wire coming from the fuel pump is the other ground wire. Electrical wiring issues can be a nightmare if you don't have the appropriate wiring diagrams to see which wires go to where. A mechanic, such as one from YourMechanic, will have access to the proper schematics to help you
or go to this link and see if it helps you out some more.
No power to fuel pump Google Search

Nov 22, 2017 | Cars & Trucks

1 Answer

Medion PC MT 5 type MEDMT79


Fuse in the plug?
Sounds like a good design...........

[Since I do not know, is this an indication that the power cord's plug, on the surge protector side; has a fuse in it? ]

So what is the method to check a fuse?
Is it the preferred method to eyeball it?
No
A multimeter set to OHM's, should be used to check it. (1K)

"It looks like the fuse element is going across okay"
Not always true. May be present, but not actually be touching one of the ends, and fool you.

Going with the premise that you KNOW;
A) The fuse to be good
B) The power cord TO Power Supply is good.
C) THE receptacle in the surge protector, that you have the power cord plugged into; is good.

Reasoning on the last statement?
I have had Many surge protectors, where just THAT receptacle was bad.
"Hmmm, power LED light is on, so surge protector is on,
router has power, monitor has power, and so does the printer.
Let me plug a table lamp into THAT receptacle, the computer is plugged into........"

Nope! NADA!

Power is KNOWN to be getting TO Power Supply?

Okay. Suggest a simple test now.
This test determines if the problem is the Power Supply; Or the Power On switch.......

The test is to use a jumper wire, on the ATX main power cable's connector.

Do Not know which one the Medion has.
It is either a 20-pin ATX main power cable, or a 24-pin ATX main power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20

[NOTE* Color of connectors does NOT matter ]

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain24

Whichever one your Power Supply has, look for the GREEN wire.
The Green wire is the Soft Power On wire. (Abbreviated as PS_ON)

The Green wire is Temporarily jumped to ANY Black wire.
ALL Black wires are Ground wires.

The preferred jumper wire is a straightened out paperclip, bent into a U-shape.
Turn the U-shape over.
The top of the U is wrapped a few times with black plastic electrical tape. (Color doesn't matter. It's just that Black is more common)

This taped area is for your fingers, and thumb to hold onto.
The 'Legs' coming down, are what is used.

Power Supply plugged into power, and 20 or 24-pin ATX main power cable; plugged into motherboard.

The BACK of the ATX main power cable's connector, is where the wires go in.
It is the Back of the ATX main power cable's connector, where the U-shaped jumper wire is to be used.

One leg slides down into a socket hole, that has the Green wire in it.
Slides RIGHT NEXT TO the green insulation of the wire, and down into the socket hole.

MUST slide down into the socket hole far enough, that the U-shaped jumper wire touches a female metal terminal; that is on the end of the Green wire.

This is an example of what the female metal terminal connector, looks like,

http://www.mcmelectronics.com/product/28-9420&utm_medium=Affiliate&ref=cj&utm_campaign=CommissionJunction&utm_source=CommissionJunction?utm_expid=8634549-14

Looking back at the Playtool link, look at the middle photo.
There you see the ATX main power cable, unplugged from the motherboard, and you see a FRONT view of the connector.
Here you can make out the open end, of the metal terminal connectors mentioned above.

The jumper wire must touch the Back of this connector.
(Jumper wire has to go Approximately 3/8ths of an inch, down into the socket hole.
.375 inches)

Moving on........

The other leg of the U-shaped jumper wire, goes down into ANY socket hole with a Black wire in it.
ALL Black wires are Ground wires. (Negative)

[This is a DC circuit. There is a Positive, and a Negative.
ALL power wires are Positive wires. ALL Black wires are negative wires. { Ground ]

The Soft Power On circuit uses 5 Volts DC.
In comparison two D cell flashlight batteries produce 3 Volts DC.

NOT stating there may be a small spark!
It's just the way electricity works.
For this reason you may wish to wear a glove, on the jumper wire hand.

The contact period made is no more than 2 seconds.
The Power On switch is a Momentary Contact Switch.

IF, the Power Supply turns on you have a bad Power On switch.
IF, the Power Supply does NOT turn on, you have a bad Power Supply.

The Power Supply in your computer is a Converter.
It converts HIGH AC voltage down to 3 LOW DC voltages;
3.3 Volts DC
5 Volts DC
12 Volts DC

EACH one is a Voltage Power Rail.

Orange wires are 3.3 Volt wires
Red wires are 5 Volts
Yellow wires are 12 Volts
(ALL Black wires are Ground/Negative wires)

EVERY wire that is Orange, is a 3.3 Volt (DC) wire.
ALL Orange wires go back TO the Power Supply.
They all connect TO the 3.3 Volt power rail, in the Power Supply.

EVERY wire that is Red, is a 5 Volt wire.
ALL Red wires connect to the 5 Volt power rail, in the Power Supply.

The same can be said for All Yellow wires.
ALL Yellow wires are 12 Volt wires.
ALL Yellow 12 Volt wires connect to the 12 Volt power rail, in the Power Supply.

IF, just one voltage power rail is weak, the computer will NOT work.

A) If ALL of the LED's were on at once, they would use less than 1 Watt of power.

B) EACH fan uses 2 to 3 Watts of power.

C) A typical Processor (CPU) can use 51 to 130 Watts of power.
Just depends on what CPU (Processor) it is.

[LED = Light Emitting Diode. It is redundant to refer to it as an LED light. That is saying it is a Light Emitting Diode light ]

That is why you may see LED's light, and maybe fans spin, but no computer working.
NOT enough power to turn the Processor (CPU) on...........

[Just in case you get this far, and this happens]

http://www.directron.com/atxswitch.html

The above ATX power on switch, is used in a LOT of desktop computers.

The Power On button is an assembly. it has the Power On switch, inside it.

For additional questions please post in a Comment.
Or click on Reply at end of solution.

Regards,
joecoolvette

May 11, 2013 | Computers & Internet

1 Answer

Why wont it power up


A) It's lazy

B) Too tired

C) It's Tuesday

D) The ATX Power On switch is bad, or the Power Supply.
Suggest you diagnose by bypassing the Power On switch.

Has nothing to do with the Power On switch, or it's wires. A jumper wire is used on the Soft Power On wire to ANY Ground wire.

The eMachines W3653 Desktop PC uses an ECS 945GCT-M3 motherboard,

http://support.gateway.com/s/MOTHERBD/Shared/4006188R/4006188Rnv.shtml

Uses a 24-pin ATX main power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain24

[Note* Color of connectors does not matter ]

Note the Green wire going into the back of the power cable's connector. This is the Soft Power On wire. (Abbreviated PS_ON)
Note all the Black wires. ALL Black wires are Ground wires.

The preferred jumper wire is a straightened out paper clip, then bent into a U-shape.
The top of the U is wrapped a few times with black plastic electrical tape. This taped area is for your fingers and thumb to hold onto.

Turn the U-shaped jumper wire upside down, and the 'legs' are what is used.
One leg goes down into a socket hole with the Green wire.
The wires go down into the Back of the power cable's connector.
Down into socket holes in the connector.

The jumper wire 'leg' goes down into the back of the connector, RIGHT NEXT TO the Green wire, and slides down in the socket hole past the insulation of the wire.
The jumper wire MUST go down far enough in the socket hole, to touch the metal terminal.

Every wire going into the 24-pin ATX main power cable's connector, ends in a metal terminal,

http://www.molex.com/molex/products/datasheet.jsp?part=active/0002081202_CRIMP_TERMINALS.xml&channel=Products&Lang=en-US

The other 'leg' of the jumper wire goes down into the back of the power cable connector, and into ANY socket hole that has a Black wire in it. ALL Black wires are Ground wires.

The contact made is no more than 2 seconds.
The Power On switch is Momentary Contact Switch.

IF the Power Supply comes on you have a bad $5 Power On switch.
IF the Power Supply does Not come on you have a bad Power Supply.

http://www.directron.com/atxswitch.html

For additional questions please post in a Comment.

Regards,
joecoolvette

Sep 30, 2012 | eMachines W3653 Refurbished Desktop...

2 Answers

The power supply came with no manual. There is no P IV power lead. There are two aux power leads. (1) four wire (O,B,R,Y) and (1) six wire lead (B,Y,B,Y,B,Y) The original power supply P IV lead has four...


As you've noted you need two Black wires (Ground), and two Yellow wires (12 Volt),
for a 4-pin ATX +12 Volt power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#atx12v4

If you are not using the 6-pin PCI Express power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#pciexpress

,rob the 4-pin ATX +12 Volt power cable connector, and wires from the old power supply.

Splice the wires of the 6-pin PCI Express to them.

Note:
Orange wires are 3.3 Volt
Red wires are 5 Volt
Yellow wires are 12 Volt
Black wires are Ground wires.

You need two Yellow wires, and two Black wires.


Or if you have a spare 4-pin standard Peripheral power cable from the power supply,

http://www.playtool.com/pages/psuconnectors/connectors.html#peripheral

,buy and use an adapter power cable.
Example,

http://www.directron.com/p4atx.html

Nov 27, 2010 | Coolmax Technology COOLMAX M500B 500W EPS...

1 Answer

No power


No power to the motherboard?
Have you performed the test to see whether the problem is the Power On switch, or the Power Supply?
The test involves bypassing the Power On switch.

Nothing to do with the actual cable (Wires) that go from the motherboard to the Power On switch.

If you bypass, and the Power Supply comes on, you have a bad Power On switch.
If you bypass, and the Power Supply does Not come on, you have a bad Power Supply.

The MSI (Micro Star International) K8MM-V motherboard uses a 20-pin ATX main power cable.

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20

The Green wire you see is the Soft Power On wire. (PS_ON)
ANY Black wire you see is a Ground wire.

A jumper wire is used to make a Momentary contact from the Green wire, to ANY Black wire.

Observe the photo to the far Right.
Where the wires go down into that connector is the Back of the connector.
Each socket hole has a wire.
At the end of every wire is a metal terminal.

The metal terminals are pretty far down in the socket holes.
The jumper wire must go down into the socket hole, NEXT to the wire already in there, and Must touch the metal terminal.

The jumper wire slides down in the socket next to the wire, and touches the metal terminal down in the bottom, of the socket hole.

A paper clip is usually used for a jumper wire. The small diameter of the paper clip allows it to slide next to the wire, go down in the socket hole, and touch the metal terminal at the end of the wire.

A paper clip is straightened out, then bent into a U shape. The legs go down in the socket holes, (Green wire, and ANY Black wire)
The middle of the paper clip is wrapped few times with Black plastic electrical tape.
This is for your finger, and thumb to hold onto.

The contact period is no more than 2 seconds. (1001,..1002)

The voltage you will be dealing with is 5 Volts DC.
Two D cell flashlight batteries produce 3 Volts DC.

Computer plugged into power, computer case open, computer laying on it's side.
Use the jumper wire.

If the Power Supply comes on, you have a bad Power On switch.
If it doesn't, you have a bad Power Supply.

The Power On switch is located inside the plastic Power On button assembly.
This is one generic ATX power on switch that I have found fits many computers,

http://www.directron.com/atxswitch.html

Should like to know your findings.
Regards,
joecoolvette

Nov 19, 2010 | MSI K8MM-V Motherboard

1 Answer

Emachine ET1810 is not powering on already replaced the power supply


You may have a bad Power On switch. The Power On switch is located inside the plastic Power On button.

This is a generic ATX power on switch, that I have found works in many computers,

http://www.directron.com/atxswitch.html

Have you bypassed the Power On switch?
If you bypass the Power On switch, and the Power Supply comes on, you have a bad Power On switch.
If you bypass the Power On switch, and the Power Supply does Not come on, you have a bad Power Supply.

Sometimes a new Power Supply can be bad.
Make SURE the ATX main power cable is plugged in tightly.

(I have had an instance recently where I bypassed the Power On switch, and the Power Supply came on, but only as long as the jumper wire was in place. Remove jumper wire? Power Supply went off. Removed the jumper wire, then pressed the Power On button. The Power Supply came on )

Bypassing the Power On switch has nothing to do with the switch itself, or the wires to the switch.
A jumper wire is used in the connector for the ATX main power cable.

My sources indicate the ET1810 uses a 24-pin ATX main power cable.

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain24

A jumper wire is used to connect the Green wire (Soft Power On. Also abbreviated as PS_ON) to ANY Black wire. (ALL Black wires are Ground wires)

Looking at the photo to the far right, you will see the Green wire goes down into a socket hole.
This is the Back of the connector.
The jumper wire goes down into the socket hole RIGHT NEXT to the Green wire.
The jumper wire has to go down into the socket hole pretty far.
(Approximately 1/2 inch)

At the end of the Green wire is a metal terminal. The jumper wire has to go down into the socket hole, far enough to touch that metal terminal.
Same thing for ANY socket hole with a Black wire.

(The Green wire is the Soft Power On wire. It is a 5 Volt DC wire. The Black wires are Ground wires.
The jumper makes a circuit from the Soft Power On wire to a Ground wire)

The jumper wire usually preferred is a paper clip straightened out, then bent into a U-shape.
The middle of the U is wrapped with black plastic electrical tape.
This is where your fingers hold the jumper wire.

One end of the jumper wire goes down into the socket hole with the Green wire.
The other end of the jumper wire goes down into a socket hole with ANY Black wire.
The contact is no more than 2 seconds.


My sources indicate the motherboard is an ECS MCP73VT-PM
(EliteGroup)

Oct 10, 2010 | eMachines ET1810-01 PC Desktop

1 Answer

Power light on power supply is on, but won't turn on when you push the power button on the front of the computer. No fans run nothing.


Bad Power On switch. (Located inside the plastic Power On button), or Bad Power Supply. Weak voltage power rail.

Bypass the Power On switch to see if the switch is the problem, or the Power Supply.

To perform this procedure you will be using a jumper wire to touch the Soft Power On wire's terminal contact, (PS_ON. Green wire), to ANY Ground wire's terminal contact, (Black), in your 24-pin ATX main power cable's connector. Brief contact, no more than 2 seconds.

Main power cable remains plugged in. The jumper wire can be a paper clip straightened out, then bent into a U-shape. The bend of the U is wrapped with electrical tape.

The legs of the U go down into the socket holes of the Green wire, and ANY Black wire. (ALL Black wires going down in that connector are Ground wires)

You have to make sure the jumper wire touches a metal terminal contact, that is down at the bottom of the wire.
The jumper wire is slid down next to the wire, in the socket hole.

The voltage is 5 Volts DC.
Two D cell flashlight batteries produce 3 Volts DC.

1) http://support.gateway.com/s/PC/R/1015003R/1015003Rnv.shtml

2) http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain24

Sep 30, 2010 | Gateway GT5662 Desktop PC

1 Answer

My computer wont turn on


This is in direct relation to an HP Pavilion a1440n desktop computer.

The Pavilion a1440n motherboard, has a 24-pin ATX main power connector.

Shown here on HP Support > Pavilion a1440n > Motherboard Specifications,

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00590499&tmp_task=prodinfoCategory&lc=en&dlc=en&cc=us&lang=en&product=1843644

Scroll down the page to the motherboard illustration, and the photo below it.

In the illustration, the 24-pin ATX main power connector is marked -
ATXPWR. (Right upper side. Next to the Floppy drive connector)

You can see where the 24-pin ATX main power connector corresponds, in the photo.

This is a closer look at a 24-pin ATX main power cable, it's respective connector, and the corresponding connector on the motherboard.
(Not the Pavilion a1440n motherboard that is shown)

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain24

The two wires you want to jump across are the Soft Power On wire, (PS_ON), and ANY Ground wire.

ALL wires with Black insulation are Ground wires.
The Green wire is the Soft Power On wire.

This is a DC circuit. A flashlight using AA, AAA, C, or D cell batteries is one example of a DC circuit.
Direct Current.

Using just one battery for an example in a flashlight, power goes from the Negative terminal of the battery, through the slide On/Off switch on the side of the flashlight, and up to the Negative side of the flashlight bulb.

Power then goes through the filament of the flashlight bulb, to the Positive terminal of the battery, completing the circuit.

By using a jumper wire from the Soft Power on wire, to ANY Ground wire, you are completing a DC circuit.
The 5 Volt Standby circuit.

When a Power Supply is plugged into power, there is a 5 Volt voltage present in the Power Supply.
By pressing the Power On button, you are making a momentary contact, which completes the 5 Volt Standby circuit.
This 5 Volts 'excites' the Power Supply, and turns the Power Supply on.

(Actually you are momentarily closing the Power On switch. The Power On switch is located inside that plastic Power On button.

The Power On switch is a Momentary Contact Switch. The two contacts touch BRIEFLY, then spring pressure moves the contacts apart.

This is an example of a generic ATX Power On switch, that I have found fit's many computers,

http://www.directron.com/atxswitch.html )

Most of the time the Ground wire (Black) that is nearest the Soft Power On wire, (Green), is the Ground wire that is used.
Just down for ease of connecting.
You can use ANY Ground wire.

Looking at the photo in the middle of the above Playtool link, you are looking at the FRONT of the connector.

Note the metal square terminal connectors, in the socket holes.

These metal square terminal connectors, connect to the power wires coming into the 24-pin connector's plastic body.
This example resemble those metal terminal connectors, except they are square in shape, while this example is round in shape,

http://www.mcmelectronics.com/product/28-9410&mybuyscid=12972124402

The power wires come in the BACK of the connector.
The power wires are insulated.

This means that to connect a jumper wire to the metal terminal connector at the end of the power wire, the jumper wire has to go pretty far down in the socket hole.

The bare end of the jumper wire, has to go down in the socket hole far enough, to touch the metal terminal connector

Looking at the photo all the way to the right, in the Playtool link, where the power wires go down into the Back of the connector, is where the jumper wire goes.

The jumper wire goes into the socket hole, WITH the power wire, and the Ground wire.
Right next to the power wire, and right next to the Ground wire.

(Green Soft Power On wire {PS_ON}, and ANY Black Ground wire)

I use a jumper wire that is insulated, just like the power wires that go into the 24-pin ATX main power cable

Approximately 3 inches long, 1/2 inch of insulation is stripped off of each end of the wire, and the wire is bent into a U-shape.

Most use a paper clip, with several winds of black electrical tape in the middle, and the paper clip is bent into a U shape.

Choice is up to you, but please read on before you begin.

The U-shaped wire/paper clip is turned upside down.
The legs of the wire, or paper clip, go down into the socket holes.
Right next to the power wire, and the Ground wire.

The 24-pin ATX main power cable is still plugged into the 24-pin ATX main power connector, on the motherboard.
(As shown in the photo to the right, in the Playtool link)

I would suggest having the Power Supply unplugged from power, then insert one leg of the jumper wire into the socket hole with the Green Soft Power On wire.

Plug the Power Supply into power.
Now BRIEFLY touch the other leg of the jumper wire, into the socket hole of ANY Ground wire.

(ALL Ground wires end in one terminal point. Doesn't matter which Ground wire you chose)

You are making a BRIEF contact. No more than 2 seconds.
(Count, 1001,..1002)

You MUST ensure that the bare ends of the jumper wire, or the ends of the paper clip, TOUCH the metal terminal pins down in the socket holes.
(Green wire socket hole, and ANY Black wire socket hole)

Otherwise you are Not making a contact.

Advisement:
There will be a spark!

Warning you in advance.
Hence you may wish to wear a protective glove, on the hand that holds the jumper wire.
You may also wish to use an insulated wire, instead of a paper clip.

However,........the voltage we are talking about here is 5 Volts DC.
Two AA, AAA, C, or D cell flashlight batteries produce 3 Volts DC.

[The Power Supply in your Pavilion is an SMPS.
Switched-Mode Power Supply.

It converts AC {Alternating Current} electricity from your household, school, or business into DC electricity. (Direct Current)

There are three main DC Voltages produced by the Power Supply.
A) 3.3 Volts. (3 point 3)
Orange insulated wires are 3.3 Volts

B) 5 Volts
Red wires

C) 12 Volts
Yellow wires

ALL Black wires are ground wires.

If you use the jumper wire on the Soft Power On wire, and a Ground wire, AND the Power Supply comes on, you have a bad Power On switch.

If the Power Supply does Not come on, you have a bad Power Supply.
No if's, and's, or but's about it.

Apologize for the length of this solution, but I wanted to make it as plain, as if I were sitting next to you explaining this.

Jul 30, 2010 | HP Pavilion a1440n PC Desktop

1 Answer

PC was caught in a lightning storm, and now will not boot (only at random). It seems like it's not getting power, when it does it'll boot normally. But when the storm hit my LAN was disabled and I had to...


Test whether it is the Power On switch, or the Power Supply. Since the LAN card bit the dust, you may be looking at a worse problem, though.

Bypass the Power On switch.

If the Power Supply comes on, the problem is the switch.
[One generic ATX Power On switch, that I have found fits many computers,

http://www.directron.com/atxswitch.html

If the Power Supply does not readily come on, the problem is the Power Supply.

To bypass the Power On switch, you will be using a jumper wire on the
24-pin ATX main power cable connector.

Looks like this,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain24

(Not necessarily the same color, and isn't located in the same position on your motherboard, as shown in the link)

Motherboard orientation:
Processor to the top, Ram Memory slots to the right.

The 24-pin ATX main power cable connector on the motherboard, is to the near right, of the number 4 Ram Memory slot.

In case you do not have the Owner's Manual, for your Inspiron 530 desktop computer,

http://support.dell.com/support/edocs/systems/inspd530/en/index.htm

On this page left-click on -
Owner's Manual - View - Download - (HTML 3.44MB)

Left-click on - Removing and Installing Parts
Left-click on - System Board Components
(System Board = Motherboard)

Number 7 - main power connector (ATX_POWER), is the
24-pin ATX main power cable connector, on your motherboard.

Referring back to the Playtool link, you will see a wire with Green insulation on it.
This is the Soft Power On wire. (PS_ON)

A jumper wire is used to connect it to ANY Black wire.
ALL Black wires are Ground wires.

[This is a DC circuit. There is a Positive, and a Negative.
A Ground wire is a Negative wire.

The green Soft Power On wire, is a positive wire containing 5 Volts.
You are completing a circuit.
The Soft Power On circuit.
You are bypassing the Power On switch]

There is no splicing of the wires to connect the jumper wire.
The jumper wire will go down into the socket holes, of the 24-pin ATX main power cable connector.

One end of the jumper wire goes down into the socket hole, containing the green Soft Power On wire.
The other end of the jumper wire goes down into a socket hole, with ANY Black wire.

The 24-pin ATX main power cable, is connected to the 24-pin ATX main power cable connector, on the motherboard.
Just as shown in the photo to the far right on the Playtool link.

The back of the 24-pin ATX main power cable's connector, is where the wires come in.
(The front of the power cable's connector is plugged into the motherboard)

I use a jumper wire that is approximately 3 inches long. (7.62cm)
An insulated wire. Both ends of the insulated wire are stripped of insulation, approximately 1/2 inch. (1.27cm)

One bare end of the jumper wire, goes down into the socket hole of the Green wire. Right next to the wire.
It has to go pretty far down in there.

At the end of each power wire, going into the 24-pin ATX main power cable connector, is a metal terminal pin. (Actually is a round hollow metal pin)
The jumper wire's bare end Must touch that metal pin.

The other end of the jumper wire, goes down into ANY socket hole with a Black wire.
(ALL Black wires are Ground wires)

Power Supply (Computer) plugged into power, the jumper wire is inserted.
The contact is a very BRIEF one. No more than 2 seconds.
(The Power On switch is a Momentary Contact Switch)

I suggest you also check the 12 Volt power rail. Check it with everything plugged in, inside the computer, and the computer on.
You need the Power Supply to have a load to get an accurate test.

There are 3 Voltage power rails in the Inspiron SMPS.
(Switched-Mode Power Supply, or just Power Supply for short)

A) The 3.3 Volt power rail
B) The 5 Volt power rail
C) The 12 Volt power rail.

The main one to check is the 12 Volt power rail.
[Orange wires are 3.3 Volt.
Red wires are 5 Volt.
Yellow wires are 12 Volt ]

The Positive (Red probe lead of the multimeter, is connected to any Yellow wire, coming out of the Power Supply.
The Negative (Black) probe lead of the multimeter, is connected to any Black (Ground) wire.

See if there is an unused standard 4-pin Peripheral power cable.
It has 1 Red wire, 1 Yellow wire, and two Black wires.
Connect to the Yellow wire, and to one of the Black wires.

http://www.playtool.com/pages/psuconnectors/connectors.html#peripheral

[Multimeter function set to DC Volts. If it has it, set it to the 0 to 50 Volt scale]

11 to 13 Volts is Okay, but I prefer the voltage to closer to 12.
11 Volts indicates it's time for a new Power Supply.

Jul 27, 2010 | Dell Inspiron 530 Desktop Computer

2 Answers

I need a wiring diagram for a rainbow d4c


Are you talking about the power switch. The new power switches have 4 wires sautered to the power switch, where the old ones have 6 wires that slip in and lock into the power switch.

The blue ones are for your power cord, and the black ones are for your vacuum motor, and your power nozzle plug.

Secure one motor wire and one power nozzle plug wire to one of the black wires out of the new switch, and secure the other two, to the other black one from the power switch. It does not matter which ones that you match together. Secure one of each of the power cord to the two blue wires from the power switch. It does not matter which one of them goes to each wire neither. It is AC so power goes both ways.

Use twist on wire nuts to secure the wires to each other, and put some electrical tape around each of them, after you secure them securly with the wire nuts.

It is best to secure the cluster of wires to each other with a pull tie, after you are finished wiring everything.

If you have any more questions let me know. I am a Rainbow seller, and a Rainbow expert also.

Thank you,
Ralph

May 25, 2010 | Rainbow Technologies D4 Bagless Vacuum

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