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HP Pavilion Media Center TV m7750n Desktop PC support

Replacing the Power Supply in HP Pavilion Media Center TV m7000/8000 Series Desktop PCs

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This document only pertains to HP desktop PCs with the following PC case:

Before you begin

  • Turn off the computer, disconnect all cables, and 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.
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 noncarpeted 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.Do not attempt to disassemble or repair the power supply, or this could cause personal injury and equipment damage. Always replace the entire power supply.
Your computer comes with a power supply, which is secured to the back of the computer.
Step 1. With all cables disconnected from the computer, remove both side panels and the front cover.

For more information about removing the side panels and the front cover, refer to the HP support documents Opening the PC Case and Removing the Front Cover .
Step 2. Pull the latch away from each optical drive and then push the drives forward for better access to the power supply cables.
Step 3. Pull the latch away from the hard disk drive cage and then push the drive forward for better access to the power supply cables.
Step 4. Disconnect all power supply cable connectors that are attached to the motherboard and to the various internal components (hard drives, CD/DVD drives, and other internal devices). Remember the cable connector types and where they connect on the motherboard. Use labels if necessary.

NOTE:If your computer has serial ATA power and data cables, the connectors must be squeezed to disconnect them.


Step 5. Remove the four screws that connect the power supply to the back of the computer.
Step 6. Lift the power supply up and out of the computer.

Replacing the power supply

Use the steps in this section to replace the power supply.
The power supply sits on three ledges in the upper corner of the computer and rests against a side guide.
Step 1. Align the power supply toward the ledges and the guide, and then slide it toward the back of the computer until ...
... the screw holes on the power supply align with the screws on the back of the computer.
Step 2. Attach the four screws that secure the power supply to the back of the computer.
Step 3. Connect the power connectors to the computer drives and the motherboard.
Step 4. Replace both side panels and the front cover.

For more information about replacing the side panels and the front cover, refer to the HP support documents Opening the PC Case and Removing the Front Cover .
HP Pavilion Media Center TV m7750n Desktop PC

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