Question about Dell Latitude D505 Notebook

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D20 Diode value on Motherboard.

Hi folks. On the M/B, bottom of the connector where the power switch daughterboard plugs to the M/B, is a burned diode, with a pc board trace id of D20. Does anyone know what value this diode is? I can R&R, but it would be nice to have a value for this part... Also, if anyone knows what might cause this fried condition, that would be helpful too. I have a new power jack I will put on if I can figure out and replace the diode. Probably got fried from a shorted jack...at least that's the theory. I have a nice close up pic if there is a way to post that here... SetiRich!

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Contact Dell support. Tell them that you were told by a tech (that has repaired many of these problems) that you believe you have a motherboard with leaky capacitors (do not mention the burnt out diode, just tell then it no longer boots). After much interaction with Dell technicians, it turns out that dell has extended the motherboard warranties of most of their PC's including laptops. I know of two people so fat that have had Dell warranty repairs done, even though the system was out of warranty. Once they hear "leaky capacitors" they will advise you that even though your unit is out of warranty, they will replace it. Hope that helps! Best regards

Posted on May 04, 2007

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Posted on Jan 02, 2017

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Power supply diagram for ht 2000 motherboard


http://www.ebay.com/itm/ECS-HT2000-AMD-AM2-Socket-mATX-DDR2-800-Motherboad-w-NVidia-Graphics-/251260314586?pt=Motherboards&hash=item3a804823da


1) Uses one 24-pin ATX main power cable.

Motherboard installed in computer case, the motherboard connector for the 24-pin ATX main power cable; is to the Right of the Blue IDE (PATA) connector.
(Right side of motherboard)

General example. Note that color does NOT matter of connector,

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


2) Uses one 4-pin ATX +12 Volt power cable,

Motherboard installed in computer case, the whitish square 4-socket hole connector, to the Bottom/Left corner of the Processor socket; is the 4-pin ATX +12 Volt power cable's motherboard connector.

General example. Note color does NOT matter of connector,

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

THAT, would be considered a Power Supply diagram of the motherboard.

They are the only two power cables that plug into the motherboard.

The front of your desktop computer is the Front Panel.

The area of contact pins on the motherboard, that the Main wires from the Front Panel go to, is the Front Panel header.

Power On switch, Power On LED, (Light Emitting Diode), Harddrive activity LED, and a Reset switch IF used.

Regards,
joecoolvette

Apr 15, 2013 | ECS HP MCP61PM-HM Nettle3-GL8E 6150SE AM2...

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Hi, I have a Mitsubushi model VS-60603, the problem about this TV it is not...


The mitsubishi VZ5 chassis that will not power up often is the result of a leaky diode raising the voltage on IC700. A quick check is to check pin 4 of IC 700 for
0 Volts DC. If pin 4 has any voltage replace Diode 980 on the main PCB it is leaky and the set should power up. This tip relates to all VZ5 chassis mitsubishi's

on May 24, 2008 | Mitsubishi VS-60603 60" Rear Projection...

1 Answer

Remove ribbon cable


1) Don't know of any daughterboard Donald.

( A Daughterboard connects to the Motherboard, as an extension of the motherboard. Components plug into the daughterboard as they would the motherboard )

http://www.ebay.com/itm/Asus-Eee-PC-1001PXB-Motherboard-60-0A2BMB8000-A05-with-CPU-AS-IS-/170900271610?pt=Motherboards&hash=item27ca7331fa

That is a USB/ Audio/ Ethernet board,

http://www.ebay.com/itm/Asus-Eee-PC-1001PX-USB-Audio-Board-69NA2BB11B01-Ethernet-/280836767618

2) The cables are FFC. Flat Flex Cable,

http://en.wikipedia.org/wiki/File:Flat-Flex-Cable.jpg

The connector/s on the motherboard are a style of ZIF connector.
ZERO INSERTION FORCE.

The bottom of the rectangular connector is the BODY.
The top of the connector is the Locking Bar.

The Locking Bar wedges the Flat Flex Cable in place.

I HOPE you unlocked the Keyboard's Flat Flex Cable, BEFORE pulling on the cable!

The white tabs of the Locking Bar are just barely visible on each side, of that Keyboard FFC.
They are eased up with the thumbnails.

The Locking Bar DOES NOT COME OFF of the Body, or one of them is broken. If so, I hear the motherboard will skip off of water, REAL GOOD!
Or can be used for a one-way Frisbee.

The FFC's that go over the Harddrive, have a different style of ZIF connector, on the USB board.

The Black rectangular tab Locking Bar, flips up. Break the hinge pins, or the Locking Bar hinge areas, and use the motherboard for a Frisbee.

http://www.insidemylaptop.com/disassemble-asus-eee-pc-1015px-netbook/

For additional questions please post in a Comment.

Regards,
joecoolvette

Sep 13, 2012 | ASUS Eee PC Netbook

1 Answer

Ms 7613 ver 1.1


http://bizsupport1.austin.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01946060&printver=true

View the motherboard photo at the Top, and also the Motherboard layout illustration, at a little over halfway down the page.

1) In the motherboard photo, all the way to the right side. View the Yellowish/Whitish connector, that has two columns of 12 socket holes.

This is where the 24-pin ATX main power cable plugs in.
In the motherboard layout illustration it is labeled - ATX1.

Here is a general example of this power cable, and respective connector on the motherboard,

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

Note that new Power Supply's, generally come with a 20+4-pin ATX main power cable.
This is so it can be used on the older computers that used a 20-pin ATX main power cable, and newer ones that need a 24-pin ATX main power cable.

Do not mix it's extra 4-pin power cable, with the 4-pin ATX +12 Volt power cable.

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20plus4

Note the Lock on the side/middle. It has a hook on the end. The hooked end goes over a Tab, on the motherboard's connector.
The Lock works on the same principle as a see-saw on a playground.

You squeeze the top near where the wires come in, and this brings the hooked end away from the Tab, on the motherboard connector.
With the top of the Lock still squeezed in, the power cable is then removed USING the connector. (NOT the wires)

When assured that the power cable is plugged in tightly, and correctly, the hooked end of the Lock will be over the Tab, on the motherboard connector.

2) Look to the left of the Processor socket, and halfway in-between it, and the outside edge of the motherboard.
Whitish 4-socket hole square connector.

This is where the 4-pin ATX +12 Volt power cable plugs in. Power for the Processor. Note that it also has a Lock, with a Tab on the motherboard connector.

In the motherboard layout illustration it is labeled - PWR1

General example of power cable,

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

That's it for the motherboard as for power cables that plug into it.

The rest of the power cables from the Power Supply, plug into the optical drive/s, harddrive, and card reader if used.

4) If your harddrive is an IDE (PATA) unit, it will use a 4-pin standard Peripheral power cable. Same with an optical drive that is an IDE (PATA) unit,

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

The computer case fan plugs into SYS_FAN1 connector, which is below the PWR1 connector. You may also have a computer case fan that uses the above power cable.

5) If your Harddrive, or optical drive/s are SATA, they will use a SATA power cable,

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

6) A Card Reader uses a power cable, that is also used for a Floppy Drive.

It is a 4-pin Small Peripheral power cable.
Has the same voltage wires; (Yellow - 12 Volts, Red - 5 Volts), and two Black ground wires, but a smaller connector, than a 4-pin Standard Peripheral power cable,

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


The front of your computer is the Front Panel.
The area of wires on the motherboard, that the main wires from the Front panel go to, is the Front Panel header.

Although the Front Panel header has NOTHING to do with the Power Supply, I will include it also,

Motherboard positioned in computer case; Processor to the Top, Ram Memory slots to the Right;
The Front Panel header is at the bottom/right of the motherboard.

Black rectangle with 9 contact pins.
In the Motherboard layout illustration, JFP1 is marked under this header.

There are 4 pins across the Top row, 5 pins across the Bottom row.
The pins on the Top row are numbered EVEN.
The pins on the Bottom row are numbered ODD.

Starting on the LEFT side going towards the Right, Top row;
Pins 2, 4, 6, and 8. There is NO Pin 10.

Starting on the LEFT side going towards the Right, Bottom row;
Pins 1, 3, 5, 7, and 9.

A) Pins 1 and 3 are for the HarDDrive activity LED. (Light Emitting Diode)
Pin 1 is for the Positive ( + ) wire.
If the HDD LED is dim when the harddrive is active, switch the wires around.

B) Pins 5 and 7 are for a Reset switch, IF a Reset switch is used.

C) Pin 9 is N/C. Not Connected. Reserved for factory use.

D) Pins 2 and 4 are for the Power On LED.
Pin 2 is for the Positive ( + ) wire.
If the PWR ON LED is dim when the computer is on, switch the wires around.

E) Pins 6 and 8 are for the Power On switch.

F) Again, there is No Pin 10.

For additional questions post in a Comment.
Regards,
joecoolvette

Aug 15, 2012 | HP Computers & Internet

1 Answer

Need wiring diagram for placement of the internal cables in Compaq Presario SR5410F


Top view photo of the motherboard, of an MSI MS-7525 motherboard made FOR HP by MSI, for a Compaq Presario SR5410F Desktop PC,

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01386897&tmp_task=prodinfoCategory&cc=us&dlc=en&lang=en&lc=en&product=3686678

Also scroll down the page, and click on the + sign to the left of -
Motherboard Layout.

A) 24-pin ATX main power cable:

In the photo, look to the right of the Blue ram memory slots.

The Yellowish/Whitish connector to the right of them, with two columns of 12 socket holes, is where the 24-pin ATX main power cable plugs in.

In the Motherboard Layout it is marked by - ATX1

This is a general example of a 24-pin ATX main power cable, and it's respective connector on the motherboard,

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

Note the middle photo, and the Lock on the side of the power cable's connector. The Lock has a hooked end that goes over a Tab, on the motherboard's connector.

The Lock works like a see-saw on a playground. The top is squeezed in, and this brings the hooked end away from the Tab, in order to remove the power cable.
When assured that the power cable is plugged in tightly, and therefore correctly, the hooked end of the Lock will be over the motherboard connector's Tab.

B) 4-pin ATX +12 Volt power cable:

In the center of the motherboard, under the Processor socket, is the Northbridge chip. (Part of the motherboard chipset)
It is under a finned aluminum Heatsink, that resembles a meat tenderizer's head.

Draw an imaginary line up above it, in-between the Processor socket, and the aluminum finned Heatsink, and go straight LEFT.
See the whitish 4-socket hole square connector?

In the Motherboard Layout it is marked by - JPW1

This is where the 4-pin ATX +12 Volt power cable plugs in. It is power for the Processor. Has the same locking setup as the 24-pin ATX main power cable, and it's motherboard connector.

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

C) In the Motherboard Layout to the top left corner of ram memory Slot 1, (DIMM1), is where the Processor fan connects.
CPU_FAN1

D) In the Motherboard Layout just below JPW1 is where the computer case fan plugs into. SYS_FAN1

E) In the Motherboard Layout - SATA1 - is where the SATA Harddrive data cable plugs into. (Below ram memory slots)

http://en.wikipedia.org/wiki/File:SATA_ports.jpg

The SATA power cable from the power supply, plugs into the SATA harddrive. Note that the SATA power cable's connector, is longer in length than the SATA data cable's connector.

[SATA power cable has 15-pin. SATA data cable has 7-pins ]

Note that both cable's connectors, have an L-shape on the inside.

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

NOTE*
This is what a 4-pin standard Peripheral power cable looks like,

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

IF, your SATA harddrive has a provision for a SATA power cable, AND a 4-pin standard Peripheral power cable, ONLY use just the SATA power cable!

Otherwise you will burn up the SATA harddrive. May not happen right away, but I assure you it will happen!

[ A note on SATA.
The beauty of SATA, is that you can plug into ANY SATA connector on the motherboard, and BIOS will see it.

If you plug the Harddrive into SATA 1, or SATA 2, or SATA 3, or SATA 4, connector on the motherboard, IT DOES NOT MATTER.
BIOS will find the Harddrive, or optical drive ]

The Front of your computer is the Front Panel.
The area of contact pins on the motherboard, that the main wires from the Front Panel go to, is the Front Panel header.

In the Motherboard Layout illustration, the Front Panel header is down at the Bottom/Right corner, and is marked - JFP1.
(Right in the very bottom/right corner is JUSB2. JFP1 is right above it)

JFP1. Junction Front Panel 1.
9-pin header. Black rectangle.
5 pins on the Right side, 4 pins on the Left side.

The pins are numbered EVEN on the LEFT side.
Starting on the BOTTOM going UP;
Pins 2, 4, 6, and 8. There is NO Pin 10.

The pins are numbered ODD on the RIGHT side.
Starting on the BOTTOM going UP;
Pins 1, 3, 5, 7, and 9.

A) Pins 1 and 3 are for the HarDDrive activity LED.
(Light Emitting Diode, so it is a light )

Pin 1 is for the Positive ( + ) wire. If the HDD LED is dim when the harddrive is active, switch the wires around.

B) Pins 5 and 7 are for a Reset switch, IF a Reset switch is used.

C) Pin 9 is N/C. Not Connected. 5 Volt power, and reserved for the factory to use.

D) Pins 2 and 4 are for the Power On LED.
Pin 2 is for the Positive ( + ) wire.
If the PWR ON LED is dim when the computer is on, switch the wires around.

E) Pins 6 and 8 are for the Power On switch.

For additional questions please post in a Comment.
Regards,
joecoolvette

Aug 14, 2012 | HP COMPAQ Presario SR5410F Pentium...

2 Answers

The problem is power out put voltage diodes are completely burned I not getting the value of the diodes The voltages are 72v 50v 6.3v 13v -12v These are out put voltages .so please sending me...


hi;
  1. Diode: UF4007, 1000V 1Ampere ; for 72V
  2. Diode: GUR460L, 600V, 4Ampere : for 50V
  3. Diode: UF5404,400V, 3Ampere: for 6.3V
  4. Diode: UF1G, 400V, 1.2Ampere: for 13V
  5. Diode: TVR10G, 400V, 1Ampere: for -12V
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Nov 12, 2010 | SAMTRON 55V 15" CRT Monitor

3 Answers

Need info on component 3071 on power supply board - burned up.


Its been a while since i worked on that power board. But I believe you are refering to the orange diode that runs into the single connector for the video board next to the power supply. I replaced mine with a 1n914 diode after replacing the 2200uf lytic cap and the tv fired right up.
ef1e2bf.jpg

Jul 23, 2009 | Philips Televison & Video

1 Answer

Abit IC7 Moterboard Manual wanted


Hi, follow this link #http://www.manualnguide.com/manual-get/6193/# excluding the hashes, if you can't download or view the page, the contacts should be found at the bottom right hand corner of the motherboard, as shown on pic attached, Hope i could be of any help.701ec0f.jpg

Oct 14, 2008 | Abit IC7 Motherboard

2 Answers

Abit IP95 Mobo fails to power up.


Ok, try connecting just one thing at a time - start of with just your board and the power supply... still smell burning? There's probably an issue with the power supply - no fans & leds would indicate this too (can you hear anything when you power up?)

What cooling have you been using - weird quetion, but is there any chance there could be moisture on the board? (either from water cooling or from condensation in the room)

Feb 09, 2008 | Ziotek ATX Motherboard Standoff, 12 Pk...

1 Answer

Soltek SL-75KAV Motherboard


http://www.motherboards.org/mobot/manuals/Soltek/

Aug 31, 2007 | Soltek SL-75FRV Motherboard

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