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I need ic used in power supply p4 ATX 350 . I need datasheet for integrated circuit ( IC ) the no. of ic is AT2005.

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Man that going to be amouth impossible to find because is more cheap to buy a new power supply for 25 bocks that going to kill your self trying to repair one sorry but good luck

Posted on Oct 24, 2009

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Scaleo T stops dead and shorts out house supply when plugged in.


check the board visually if you have some bulged capacitors near cpu or north bridge but in most cases also near sata controller.
if you have then replace the capacitors usually tyhey are designed for 6,3V 1000uF or same spec for 16V
all caps are 105C.
also you need to replace them in the power supply.
now days the factory giving low strenght psu to high spec computer.
get some corsair power supply between 800-1000W
i know that is to much but then you can do upgrade later on such as graphic or cpu or more ram.
finally test the voltages on mos fet transistors.
usually people asking why this happen
it happens because the main is not filtered and usually no many home user have upc backup with power filter and the seccond thing is
the fact when the board request more power from the psu then the psu drain more down and when the oscillator on the primary circuit start to catch up then the capacitors blow up by the time.
sometime the 5V goes up to 12-or 16
in this case most component suffer like sata controller or north bridge.

Mar 21, 2013 | PC Desktops

1 Answer

Which is this SMPS Ic in. HCL. Monitor model Y156W


If you are going to purchase the IC802 (IC is Integrated Circuit) Then you need to un-solder it and take it to radio shack or contact the motherboard manufacturer to get a new IC the re-solder it in. The only problem is something else may have shorted causing the IC to burn. So you may need a schematic to troubleshoot the other circuits. Good luck

Nov 08, 2012 | PC Desktops

1 Answer

1 out 50 times I turn on my Dell Dimension E520 there is no signal to the monitor. I have tried to install a new PCI express card instead of using the integrated graphics but the result was the same e.i no...


The problem is the Power Supply. Weak voltage power rail.

You've taken the right steps with your diagnosis.

1) Start with the monitor cable. If removable use a known to be good monitor cable.
Checks okay, go onto the graphics 'engine' of the computer.

If the monitor cable is not removable, use another monitor, and cable for a test.

2) If you are presently using Integrated Graphics the next step in diagnosing is to install a graphics card.
See if the problem is the Integrated Graphics 'engine'.

[ Just to add:
Intel GM X3100 is the graphics 'engine'. It is integrated into the Northbridge chip of the motherboard chipset.

Intel G965 chipset is the motherboard chipset. The Intel ID number on the Northbridge chip is 82G965.
The Southbridge chip is an Intel ICH8, or ICH8R, or ICH8-DH,

http://en.wikipedia.org/wiki/List_of_intel_chipsets#Core_2_Chipsets

{Chip and Chipset are slang terms for I.C.
Integrated Circuit,

http://en.wikipedia.org/wiki/Intergrated_Circuit }


The Northbridge chip handles the Processor, Ram Memory, and HIGH-speed graphics.
AGP and PCI Express are High-speed graphics.

A graphics card in a PCI slot is not High-speed graphics.

The Southbridge chip handles the slower capabilities of a computer.
PCI and Integrated Graphics being two of the slower capabilities.
SATA, IDE, USB, and Ethernet, are also some of the slower capabilities of a computer,

http://en.wikipedia.org/wiki/File:Motherboard_diagram.svg

CPU = Central Processing Unit. Another name used is Microprocessor, or Processor for short ]

3) Power Supply.
Weak voltage power rail.

The Power Supply has enough power to light LED lights, and maybe spin fans, but Not enough power to turn the Processor on.

A) ALL the LED lights on at once will consume less than 1 Watt of power.

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

C) A typical Processor can consume (Maximum) 51 to 125 Watts of power.
Depends on what Processor it is.

The Dell Dimension E521 desktop computer's motherboard, has an LGA 775 processor socket.
(Processor has the socket holes, processor socket has the pins)

The Intel processors that can be used in this processor socket, can be an Intel Pentium 4, (Version that uses an LGA 775 processor socket), Intel Pentium D, or Intel Core2 Duo, AND Intel Core 2 Quad, with a maximum FSB of 1066MHz. (If the BIOS version will support Intel Core2 Quad processors)
{Front Side Bus of 1066Megahertz}

Wattage consumption can be as much as 105 Watts.

Do you have a KNOWN to be good, compatible Power Supply available, to use as a test unit?

{Compatible being that the Power Supply case fits, (ATX), has the right amount of power cables, and the correct power cables. (Needs to have a 24-pin ATX main power cable, and a 4-pin ATX +12 Volt power cable, for one)

Perhaps there is an unused computer that has a Power Supply you can borrow.
Maybe someone has upgraded to a better computer, and has an unused one with a compatible power supply for a test unit.

Nov 07, 2010 | Dell Dimension E520 PC Desktop

1 Answer

Compaq sr1350nx Well, just installed a new motherboard and replaced all the parts correctly as they were. Checked all connections fired it up and actually got a screen with a few numbers then a blinking...


It IS the Power Supply cjshearer11.

The green LED light flashing is a diagnostic light now. The diagnosis is a bad Power Supply with a Gree LED flashing.

Secondly, notice how the accessories are unplugged, and the Green LED light is solid Green?

1) ALL of the LED lights combined use less than 1 Watt of power.
2) EACH fan uses 2 to 3 Watts

3) A typical Processor can use 51 to 125 Watts. Depends on what Processor it is.

Compaq Presario SR1350NX?
Uses an Intel Pentium 4, Model 519 (LGA 775 processor socket)

3.06GigaHertz maximum frequency rate (3.06GHz 'speed')
533MegaHertz Front Side Bus. (533MHz FSB)
1MegaByte of L2 cache. (1MB L2 cache)
Can use up to 89 Watts,

http://en.wikipedia.org/wiki/List_of_Intel_Pentium_4_microprocessors#Prescott_.2890.C2.A0nm.29

You press the Power On button. Inside the plastic Power On button is a Power On switch.

(Typical ATX power on switch,

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

The Power On button presses against the Power On switch making a momentary contact.
(The Power On switch is a Momentary Contact Switch)

This closes a circuit temporarily that has 5 volts present. The 5 Volt Standby power.
(The 5 volts is always present when the Power Supply is plugged into power)

The 5 Volts is directed towards a circuit within the Power Supply.
The Soft Power On circuit. (PS_ON)

This in turn 'excites' the Power Supply, and turns the Power Supply on.
(No pun intended)

The first chip on the motherboard to receive power is the BIOS chip.
(Chip and Chipset are slang terms for I.C.
Integrated Circuit)

Burned into the BIOS chip is a small program. The BIOS program.
The BIOS program looks to see what devices are installed, does a Ram Memory count, TURNS the Processor on, and hands the computer over to the Operating System.
(Windows XP, and Windows Vista are two examples of an O/S)

Your Power Supply has a weak voltage power rail.
(There are three main power rails in the SMPS in your Presario computer's Power Supply.
{Switched-Mode Power Supply}
The 3.3 Volt power rail, the 5 volt power rail, and the 12 volt power rail)

Enough power to light LED lights, and maybe spin fans, (Or spin a few times, and stop), but Not enough power to turn the Processor on.
NO Processor operating, no finding the boot record of the Operating System, on the Harddrive.

Do you have a KNOWN to be good, compatible power supply in an unused desktop computer, to use for a test unit?
Someone you may know may have upgraded to a better computer, and have a working computer with a Power Supply that you could borrow.

Needs to be an ATX form factor Power Supply.
Form factor for a Power Supply refers to the size, and shape of the case, for one.
It also applies to the power cables coming out of the power supply.

The size and shape of the case is;
6 inches Wide, 5.5 inches Long, and 3-1/2 inches Tall.

Needs a,
A) 24-pin ATX main power cable,
B) 4-pin ATX +12 Volt power cable,
C) Enough standard 4-pin Peripheral power cables, for the optical drive/s (CD/DVD drive/s),
D) One SATA power cable

A) 24-pin ATX main power cable:

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

B) 4-pin ATX +12 Volt power cable: (Power for the Processor)

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

C) SATA power cable: (Power for the SATA Harddrive. 15-pin cable)

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

D) Standard 4-pin Peripheral power cable:

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

The ATX power supply inside that Presario, is probably rated at a maximum Wattage of 250 to 300 Watts.
Made by some generic Power Supply manufacturer.
Bestec, HiPro, or Delta.
Around 90 percent of the desktop PC's out there use an ATX Power Supply.
You can buy one with as much Wattage as you want, won't hurt the computer.
A computer ONLY uses the power it needs, and No more.

Regards,
joecoolvette

Oct 20, 2010 | HP Compaq Presario SR1350NX (PP196AA#ABA)...

1 Answer

The controller will not turn on. Green light on back comes on but when we turn on the unit, the fan starts briefly and then the power cuts off.


Bad Power Supply. Weak Voltage power rail.

Not enough power to turn the Processor on, and keep it on.

1) ALL those LED lights together, use less than 1 Watt of power.

2) EACH fan uses 2 to 3 Watts

3) A typical Processor can use 51 to 125 Watts. Depends on what Processor it is. (Older Processors use less Wattage)

The Compaq Presario SR1810NX desktop computer, comes with an AMD Sempron 3200+, processor.

(Uses the Socket 939 processor socket)

[Maximum operating capability is a 1.8GigaHertz frequency rate.
1.8GHz

Giga = Approximately 1 Billion
Hertz stands for Cycles per Second.
Frequency Rate is correct computer speak for 'Speed'
The AMD Sempron 3200+ processor, can operate at a maximum frequency rate of 1.8 Billion Cycles per Second ]

HP Support >Compaq Presario SR1810NX desktop computer > Product Information > Product Specifications,

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00609384&tmp_task=prodinfoCategory&lc=en&dlc=en&cc=us&product=1841795&lang=en

The AMD Sempron 3200+, can use up to 62 Watts,

http://en.wikipedia.org/wiki/List_of_AMD_Sempron_microprocessors#.22Palermo.22_.28Socket_939.2C_E3_.26_E6.2C_90_nm.29

(Palermo Core)

When you press the plastic Power On button, you are contacting a Power On switch inside it.
(Typical ATX Power On switch,

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

When an ATX power supply is plugged into power, there is a 5 Volt Standby power, present inside the power supply.

Pressing the momentary contact power on switch, closes a circuit that directs the 5 Volt Standby power to 'excite' the power supply, and turn it on.

The first chip to receive power is the BIOS chip.
[Chip and Chipset are slang terms for I.C.
Integrated Circuit.
BIOS stands for Basic Input/Output System]

BIOS,

http://en.wikipedia.org/wiki/BIOS ]

BIOS looks to see what devices are installed, does a Ram Memory count, TURNS the Processor on, and hands the computer over to the Operating System.
(Windows XP is one example of an O/S. Operating System)

The LED lights receive power, so do the fans, and the Harddrive. When it's time for the Processor to kick on, there isn't enough power, and the Power Supply 'falls to it's knees'.

Replace the Power Supply.
It's just one of the basic ATX power supply's that are readily available in a multitude of places.
The Wattage is 300 Watts.

The ATX form factor for this power supply, (Size and shape), is approximately 6 inches Long, 6 inches Wide, and 3-1/2 inches Tall.

Power cables needed:
(Continued in a Comment)

Aug 02, 2010 | Compaq Presario SR1810NX Sempron 3200+ 1.8...

1 Answer

When I push the startup button, the green light turns on the cooling fan start's just for an instent and shuts down. Even the Green light on the back of the computeris now turnes off. Any idea's to fix...


hshorty,

When you press the plastic Power On button, it in turn presses against a Power On switch.
The Power On switch is located inside the plastic Power On button.

This is an example of a generic ATX Power On switch,

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

The switch completes a circuit.
(The Power On switch is a Momentary Contact Switch. Makes a brief contact, then opens back up)

The circuit the Power On switch completes, is the 5 Volt Standby circuit.
When a Power Supply is plugged into power, there is a constant 5 Volts (DC) present.
Closing this 5 Volt Standby circuit, momentarily 'excites' the Power Supply, and turns the Power Supply on.

Power goes to the Motherboard, and Peripherals, (Harddrive, optical drive/s, and so on)
The first chip to receive power is the BIOS chip.
(Chip and Chipset are slang terms for I.C. Integrated Circuit)

The BIOS program on the BIOS chip, looks to see what devices are installed, does a Ram Memory count, TURNS the Processor on, and hands the computer over to the O/S.
(O/S = Operating System. Windows XP is one example of an O/S)

Your Power Supply doesn't even have enough power to light those LED lights, much less turn the Processor on.

A) ALL the LED lights together, use less than 1 Watt of power.

B) EACH fan uses 2 to 3 Watts.

C) A typical Processor can use 51 to 125 Watts. Depends on what Processor it is. (Older Processors use less than 51 Watts)

If this problem is in reference to a Compaq Presario SR5130NX desktop computer, it comes with an Athlon 64 X2 - 3800+ Processor.

(Windsor Core. Also this Processor uses an AM2 processor socket)

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01048297&tmp_task=prodinfoCategory&lc=en&dlc=en&cc=us&lang=en&product=3436820

This Processor can use up to 89 Watts.

http://en.wikipedia.org/wiki/List_of_AMD_Athlon_64_microprocessors#.22Windsor.22_.28F2_.26_F3.2C_90_nm.29

Fans start to spin, and the LED power light is on for the Power Supply. When it's time to turn the Processor on, too much power is needed, and the Power Supply 'drops to it's knees'.

The Power Supply used is just a common ATX style of power supply. (Actually it is an ATX 12V 2.x)
Used in a LOT of personal computers out there, and is readily available.
It's a 300 Watt unit.

(The ATX form factor for this Power Supply, (Size and shape), is approximately 6 inches Long, 6 inches Wide, and 3-1/2 inches Tall)

Power cables from the Power Supply needed are;

A) 24-pin ATX main power cable (Main power cable to motherboard)

B) 4-pin ATX +12 Volt power cable, (Also known as P4)

C) At least one SATA power cable for the SATA harddrive, and additional SATA power cables, for each SATA optical drive.

(Your Presario may have come with SATA optical drive/s, or IDE {PATA} optical drive/s. Optical drive = CD/DVD drive)

D) If your Presario came with IDE, (Also known as PATA), optical drives, you'll need a standard 4-pin Peripheral power cable, for each drive.

E) The computer case fans, may each use a standard 4-pin Peripheral power cable. (The Processor fan attaches to the Motherboard)

F) The Memory Card Reader needs a Floppy Drive power cable. An auxiliary power cable.

An example of a compatible Power Supply,

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=4465483&CatId=1079

(Wasn't supposed to be stated as a Clarification)

Jul 29, 2010 | HP Compaq Presario SR5130NX PC Desktop

1 Answer

P4 to Dual-Core in OPptiplex GX270 with Micro atx


You will need to make sure that you have a micro ATX form factor when you buy a replacement and that you have the slots for all the hardware that you want to add. For example: http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=5633664&CatId=1533

Jul 19, 2010 | Dell OptiPlex GX270 Small Mini-Tower...

1 Answer

Hp pavilion a430n power supply is blinking


Look at this photo
(http://www.atxpowersupplies.com/images/300-watt-atx-power-supply-FSP-ATX-300GU-350w.gif)

Did you connect the p4 atx 12vx1 plug?
You may also need to connect the aux x1 plug on some models.

Mar 08, 2010 | HP Pavilion a430n PC Desktop

1 Answer

My e machine dekstop m w3503 is using only 368MB of ram out 512MB why Jose


Approximately 144MB is being used by the Integrated Graphics, and other resources.

(Computers use a GPU. Graphics Processing Unit. This is a chip that is soldered to the motherboard, {Integrated Graphics}, or is soldered to a graphics card.

[Integrated is also referred to as Onboard. On the Motherboard]

Chip is a shortened, or slang term for IC. Integrated Circuit,

http://en.wikipedia.org/wiki/Integrated_Circuit

(A Processor is one example of an IC)

Integrated Graphics shares some of the system's Ram Memory. The GPU installed needs to borrow from the computer system.

This is perfectly normal.

This is also why a graphics card, speeds up graphics processes. A graphics card has it's own graphics processor, (GPU), and graphics ram memory.

Nov 30, 2009 | E-Machines eMachines Desktop PC

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