Uniwill 340S2 - Page 56

Chapter 5 Troubleshooting Guidelines
340S2 56 Rev : B
5.2 VGA controller failure
Symptom: There is no display on both LCD and Monitor although Power-On-
Self-Test is passed
VGA Controller Failure
Try another good monitor or LCD module
Replace faulty LCD or monitor
Display OK
Remove all of I/O devices and cables from M/B except LCD or Monitor
Connect the I/O device & cables to the M/B one per
time to find out which part is causing the problem
Display OK
Replace Motherboard
Board level troubleshooting
Check SIS 630 controller
for cold solder?
Re
-
solder
Replace the parts one at a time and test after each replacement: VGA controller
Yes
No
Yes
No
Yes
No