Power On Issues - Acer Aspire S5-391 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.
Makes sure the power cable is properly connected to the computer and the electrical outlet.
1.
Remove all extension cables between the computer and the outlet.
2.
Remove all surge protectors between the computer and the electrical outlet. Plug the computer
3.
directly into a known serviceable electrical outlet.
Disconnect the power and open the casing to check the Thermal Unit (See
4.
Failure on page 4-26) and fan airways are free of obstructions.
Remove all external and non-essential hardware connected to the computer that are not
5.
necessary to boot the computer to the failure point.
Remove any recently installed software.
6.
If the issue is still not resolved, refer to
7.
4-3
Start
OK
Check
AC/Batt only
power on
OK
Check Power/B
Whether OK
OK
Check LCD
cable Whether
OK
OK
Swap M/B
Figure 4-1. Power On Issues
Online Support Information
NG
Swap AC/Battery
NG
Swap Power SW/B
NG
Swap LCD cable
Unit Thermal
on page 8-2.
Troubleshooting