Power On Issues - Acer Aspire 5755 Service Manual

Power On Issues

If the system does not power on, perform the following:
Computer Shuts Down Intermittently
If the system powers off at intervals, perform the following.
1. Makes sure the power cable is properly connected to the computer and the electrical
outlet.
2. Remove all extension cables between the computer and the outlet.
3. Remove all surge protectors between the computer and the electrical outlet. Plug the
computer directly into a known serviceable electrical outlet.
4. Disconnect the power and open the casing to check the Thermal Unit (Refer to
Unit
5. Remove all external and non-essential hardware connected to the computer that are not
necessary to boot the computer to the failure point.
6. Remove any recently installed software.
7. If the Issue is still not resolved, refer to
HTTP://MYCOMP.SU/ - Maintenance and Service Guide,Service Manual,Motherboard Schematics for Laptop/notebook
4-4
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Start
Check
AC/Batt only power on
Check
Power/B Whether OK
Swap M/B
Figure 4-1. Power On Issue
Failure) and fan airways are free of obstructions.
OK
NG
Swap AC/Battery
OK
NG
Swap Power SW/B
Online Support
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Information.
Troubleshooting
0
Thermal