No Display Issues - Acer Aspire 5755 Service Manual

No Display Issues

If the Display does not work, perform the following:
No POST or Video
If the POST or video does not appear, perform the following:
1. Make sure that internal display is selected. Switching between internal and external by
pressing Fn+F5. Reference Product pages for specific model procedures.
2. Make sure the computer has power by checking for one of the following:
 Fans start up
 Status LEDs illuminate
If no power, refer to
3. Drain stored power by removing the power cable and battery. Hold the power button for 10
seconds.
4. Connect the power and reboot the computer.
5. Connect an external monitor to the computer and switch between the internal display and
the external display is by pressing Fn+F5.
6. If the POST or video appears on the external display only, refer to
7. Disconnect power and all external devices including port replicators or docking stations.
Remove any memory cards and CD/DVD discs.
HTTP://MYCOMP.SU/ - Maintenance and Service Guide,Service Manual,Motherboard Schematics for Laptop/notebook
Troubleshooting
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NO
Replace LCD
LCD panel/cable
panel/cable
/inverter/b
Replace M/B
Figure 4-2. No Display Issue
Power On
Start
Power On?
ok?
Ext. DDRRAM
module well
connected?
Ext. DDRRAM
module OK?
LCD cable well
connected?
Issues.
0
NO
go to no power
trouble shooting
step
NO
Connect
it well
NO Replace
Ext. DDR RAM
module
NO
Connect it well
LCD Failure.
0
4-5