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Replacing the Power Supply in HP Pavilion 500 Desktop PCs

This document applies to HP Pavilion 500 desktop computers.
 HP Pavilion 500 series desktop computer

Before you begin

  • Turn off the computer. Disconnect the Ethernet or modem cable. Disconnect the power cord.
  • Transfer the computer to a clear, flat, stable work surface over a non-carpeted floor.
  • HP strongly recommends the use of an anti-static wrist strap and a conductive foam pad when working on the computer.
  • Do not remove a component from its protective packaging until you are ready to install it.
  warning:
The edges of metal panels can cut skin. Be careful not to slide skin along any interior metal edge of the computer.
  caution:
This product contains components that can be damaged by electrostatic discharge (ESD). To reduce the chance of ESD damage, work over a non-carpeted floor, use a static dissipative work surface (such as a conductive foam pad), and wear an ESD wrist strap connected to a grounded surface.

Video overview

View the following video before using the steps in this article.
note:
For best quality on dial-up connections, wait until the video has fully loaded before viewing.

Removing the power supply

Use the steps in this section to remove the power supply.
  warning:
Make sure the computer is disconnected from power before starting.
Step 1
Remove the side panel.
For more information about removing the side panel, refer to the HP support document Removing and Replacing the Side Panel.
Removing the side panel
Step 2
Locate the power supply in the computer.
Power supply location inside the computer
Step 3
Remove the power supply connectors to the motherboard and other system components.
Removing the power supply connectors
Step 4
Detach all connectors from the rear of the optical drive to create clearance for removing the power supply.
Removing the optical drive connectors
Step 5
Remove the four screws that connect the power supply to the computer.
Save the screws for power supply replacement.
Removing the power supply screws
Step 6
Press the latch at the edge of the power supply inside the unit...
Pressing the power supply latch
...and slide the power supply inwards...
Sliding the power supply inwards
...before pulling the power supply out of the computer.
Removing the power supply

Replacing the power supply

Use the steps in this section to replace the power supply.
  warning:
Always replace the entire power supply. Never attempt to disassemble the power supply or work on components within the power supply unit.
Step 1
Find the guides inside the computer that indicate the position of the power supply.
Finding the power supply positioning guides
Step 2
Find the latch inside the computer that helps secure the power supply to the computer.
Finding the power supply latch
Step 3
To replace the power supply, align the power supply within the guides...
Aligning the power supply in the computer
...and then slide the power supply towards the rear of the unit until the latch snaps into place.
Sliding the power supply into position
Step 4
Replace the four screws to secure the power supply to the computer.
Replacing the screws for the power supply
Step 5
Reconnect the connectors to the optical drive.
Replacing the optical drive connectors
Step 6
Replace the power supply connectors to the motherboard and other system components.
Replacing the power supply connectors
Step 7
Replace the side panel.
For more information about replacing the side panel, refer to the HP support document Removing and Replacing the Side Panel.
Replacing the side panel

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