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Power Supply (845JE) Replacement Instructions

I have the power cables disconnected, but cannot seem to see how to remove the PS from the case

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Hi the power supply is secured to the cabinet by 4 screws on the rear of the cab if not open the side cover 1 or 2 screws could be holding it in place with metal clamps or locks which can be released by sliding it out .

Posted on May 24, 2008

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Replace power jack


Power supply failures in a HP computer can cause your computer to fail to turn on, to operate erratically or cause certain system components not function.

However, the power supply is one of the easiest parts of a computer to replace.
You don't need any special skills to do this.

If you're nervous about opening up your computer case and potentially damaging a computer component, don't be.

All you are really doing is plugging in power supply cables after securing the power supply.
The process should take 10 minutes maximum.

Shut down your HP computer.
Disconnect the power cable from the power supply on the back of your computer.

WARNING: Before you start troubleshooting remember that you are dealing with electricity that can KILL.
http://www.kitchentablecomputers.com/static.php - rules
Only work inside the computer case when the power has been switched off and disconnected. Never open the power source.

Some of the below steps recommend removing physical parts within the computer.
While in the computer it is highly recommend that you be aware of ESD and its potential hazards.


Unscrew the side panel from the back of the case and slide it off.
Newer HP computers may have a case door you can open for access or have access buttons to press.


Look at the back of your HP computer case for a set of four screws near the top of the case. Remove these screws and set them aside.
Carefully slide your power supply out of the mounting brackets and set it on a clean working surface.
Do not disconnect any of the power connectors yet.

Slide your replacement HP power supply into the case and use the mounting screws to attach it to the chassis.


Use your old HP power supply as a guide to connect your new power supply to all the computer components.

Switch the power cables from each device from the old supply to the new supply so you don't miss connecting any cables.

Check that all the components have power cables inserted and the old HP power supply is completely disconnected from the system.

Close the HP computer case and plug the power cable into the new HP power supply.
http://www.fonerbooks.com/r_power.htm

Apr 15, 2014 | HP Hewlett Packard Pavilion Slimline...

1 Answer

Replace power supply acer ax3910


Open the case. Disconnect all cables from power supply. Unscrew the power supply. Remove it from the case. Install the new one. Screw it. Connect all needed cables. Close your case. It's done. Turn on your computer and enjoy.

Aug 06, 2012 | Computers & Internet

2 Answers

Hp Pavilion a1620n seems completely dead. Went through a diagnostic and presumed the ps was burnt out. Have since seen the ps light on while all internal cables are unplugged. Can plug all cables in and ps...


No, it indicates a bad power supply.

1) ALL the lights use less than 1 Watt
2) EACH fan uses 2 to 3 Watts

3) A typical processor uses 55 to 125 WATTS.

The base model of the HP Pavilion a1620n Desktop PC, comes with an Intel Pentium D 925
(Operates at a maximum of 3.0GHz)

The Intel Pentium D 925 uses 95 Watts,

http://en.wikipedia.org/wiki/List_of_Intel_Pentium_D_microprocessors#.22Presler.22_.28dual_core.2C_65_nm.29

In most cases the inside of the computer is dirty, as well as the inside of the Power Supply, and it's fan.

Heat = Wasted Energy
When the Heatsinks inside a power supply, and it's Fan, (To include the fan blades, fan center hub, and surrounding fan cage), become clogged with gunk, the cooling capacity of the power supply drops tremendously.

Since Heat = Wasted Energy the power supply tries to keep up with the power load demands.
Eventually components inside the power supply fail.

(Usually the Electrolytic Capacitors are the first to go)

The power supply inside a Pavilion a1620n is a common SMPS. Switched Mode Power Supply.

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

The style is the common ATX, that is used in over 90 percent of desktop computers. (ATX 12V)

The Wattage is 300 Watts.

Should you like help in finding a replacement power supply that is affordable, and reliable, just state so in an additional comment.

I do advise staying away from the cheap generic models, as they can fail in 6 days to 6 months. ($20 to $25 range)

Jan 18, 2010 | HP Pavilion a1620n (882780664494) PC...

2 Answers

Hpw do you replace the power source on a gateway MFATXPNT ESX 500S.


How do you know the power supply is the problem?
What issues are you experiencing?
Have you done any trouble shooting first? It could be a bad hard drive.

If you should need to replace the power supply first you need to get a replacement power supply for a gateway MFATXPNT ESX 500S - 300 watt power supply you can get here.

The next step is to unplug the computer from the wall > remove the case side access panel > ground yourself with an Anti-Static wrist strap cord so you don't fry *********** board electronics from static electricity discharge which can cost you a lot more to replace > now disconnect the plugs from the power supply wire harness, it may help to count the connections and mark them with a piece of tape or draw a diagram so you don't forget which loose cables should get reconnected to the new power supply. There will be at least one that connects directly to a plug on the mother board, DO NOT put tape there. > Next remove the screws which mount mount the power supply to the metal frame and slide out the power supply > slide the new power supply in the same way the other other was removed (note top from bottom) and then screw back to frame and reattach the cables > close the case > remove your grounded wrist band > plug computer back into wall and start the computer.

Congratulations, you have just replaced your power supply and ready to go.

IMPORTANT: Do not switch the power output selector switch on the power supply. Usually a recessed re switch which will adjust for european vs. US power input conversion.

Additional Resources and Tutorials
Step by Step Video Tutorial to Replace Power Supply
With pictures, step by step
Diagnosing ATX Power Supply Failure with Diagram
How to diagnose and replace a failed pc power supply

Hope you find my resources and information useful and rank or review it accordingly.

Jan 12, 2010 | Gateway GT5220 PC Desktop

2 Answers

Need to replace a Lite-on power supply witch came out of a Acer Aspire X1700 the power supply model # is PS-5221-06 need help finding replacement.


Yes, I see what you mean since your computer is an SFF, (Small Form Factor), and uses an SFF power supply. Hard to get a power supply replacement, much less the power switch for the power supply.

Some things to note about working on a personal computer power supply,

1.They use Electrolytic Capacitors inside them. The aluminum case, cylindrical looking objects. These 'Caps' are designed to slowly build up a charge, then release it all at once. They can hold a charge after being disconnected from power, for weeks, sometimes Months!
There are typically two large ones used in the Input Stage. These hold a LARGE charge! Touching the terminals on the bottom of a capacitor, or touching a circuit that they are in, can result in a bad shock, or even Fatal one!

2.The particular power supply you have, has a Soft Power On function built in. There is no switch cable from the front panel of the computer, to the power supply. The power supply can be plugged into power constantly, and needs no On/Off switch on the back. This switch could be removed, and the wires to it soldered together, with heat shrink tubing over the connection.

http://en.wikipedia.org/wiki/Computer_power_supply
http://en.wikipedia.org/wiki/Switched-mode_power_supply

You DON'T need an On/Off switch on the power supply.

I have given you a solution in the form of information, but am NOT recommending you open your power supply, Nor work on it.

Jul 22, 2009 | Lite On Computers & Internet

2 Answers

It wont turn on help please


Sounds like the power supply is out. Remove the side panel, look at the wattage and type of PS that it is, look on ebay and buy a new one. (they are much cheaper on ebay). You can always go to your local PC supply store, staples, best buy etc, but they are much more pricey.

Make sure you get the same or slightly higher wattage your pc requires. NOTE: the power supply is the chunk block on the back of the computer that the power cord plugs into. It is very easy to remove and replace. Just make sure you ground yourself before reaching into the computer casing. IE> keeping feet still, touching the metal casing of the pc BEFORE reaching in and touching any components inside the computer.
Note wiring disconnected and appropriate places replacement PS that needs to be replugged.

Good luck!

Mar 30, 2009 | HP Compaq d220M (829160054797) PC Desktop

2 Answers

E-machine wont power up


Your power supply is fried. I had the same problem with my Bestec ATX 250 power supply. I fixed the problem by installing the StatTech model: ATXPOWER250. It was easy to install and works well. It is almost identical to the original but more quiet. I got it for $29 at MicroCenter.com. Also at online Newegg.com, Radioshack.com, Provantage.com, June 20,2009

Feb 01, 2009 | Gateway Emachine Bestec ATX-250-12E PS...

2 Answers

I am looking for instructions on how to replace my e-machine atx-250-12e power supply connection.


they're pretty much all the same.

open the case. pull the 20/24 pin power plug and optional 4-pin power plug out of the botherboard. Remove power plugs from fans, hard drives, cd drives, etc.

unscrew the four screws anchoring the power supply to the case. Slide out the power supply. Put a new one in it's place, the screw holes will line up. Then reconnect the power cables just like they were when you removed the old one and boot 'er up.

All you have to do is make sure the wattage rating of the power supply is higher or equal to the old one. Your old one is only 250 watts. You will have to search VERY hard to find one that low, so don't worry.

E-machines doesn't make particularely powerful desktops so you won't have compatibility problems. Almost EVERY atx psu on the market will work.

Dec 06, 2008 | Gateway Emachine Bestec ATX-250-12E PS...

1 Answer

I have a media center cpm 1180n desktop, the green light on back of PS is blinking and when I disconnect the mobo is steady green however when I connect the mobo back to my MB and press the start bottom...


yes it sounds like the power supply is shot, you can get a replacement at any computer shop for around $40. i would put in a 400w or 450w that way if you add another hard drive or opitcal drive it wont be a strain on the new power supply

Nov 30, 2008 | Computers & Internet

2 Answers

Hp Laserjet 8150 LVPS replacement


It is located in the back of the printer on the bottom. Remove the back cover. With the power off, remove the formatter board by loosening the two big screws and pulling out. Remove the plastic cover by the side of the formatter cage. Remove the fan housing by the power connector by removing the two screws, disconnect the cable and pull straigt out. Now remove the big cable at the top and unwind from the high voltage ps. Remove the white connector in the middle of the low voltage ps. Next trace the white cable wires running from the ps to the dc controller and remove the cable from the dc controller. Now trace the fan cable for the fan in the front of the ps and remove it from the dc controller. Remove all the screws which secure it to the frame and pull straight out. Move the fan in front from the old ps to the new and reverse instructions...
Take off the large metal side cover. Look down at the bottom of the printer. The large box is the LVPS. Remove the screws holding it and follow the wiring up to where it plugs in and pull the connectors off. You'll also have to remove the fan above the LVPS on the top right side of it. You will have to take the fan mounted on the LVPS off and put it on the replacement LVPS as they don't come with fans.

Oct 23, 2007 | HP LaserJet 8150 Printer

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