beautypg.com

Flowchart 2.5—no power, part 4, Flowchart, 5—no power – HP TC4400 User Manual

Page 39: Part 4

background image

Troubleshooting

Maintenance and Service Guide

2–11

Flowchart 2.5—No Power, Part 4

Y

N

Continued from

“Flowchart

2.4—No Power,

Part 3.”

Reseat loose

components and

boards and

replace damaged

items.

Open

computer.

Loose or

damaged

parts?

Y

Close

computer and

retest.

Power on?

Done

N

Replace the following items (if applicable). Check
computer operation after each replacement:

1. Internal DC-DC converter*
2. Internal AC adapter
3. Processor board*
4. System board*

*NOTE: Replace these items as a set to prevent
shorting out among components.

This manual is related to the following products:
See also other documents in the category HP Notebooks: