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RGB PC doesnt display
Check J703 ,
Can you see the normal
waveform?
YES
Check the input of RGB Video
switch(IC700) ,
Can you see the normal waveform?
YES
Check the input of RGB Audio
switch(IC1001) ,
Can you see the normal waveform?
YES
Check the output of RGB Audio
switch(IC1001) ,
Can you see the normal waveform?
YES
Check the output of Main IC(IC100).
Especially you should check
The H,V sync and clock.
Can you see the normal waveform?
YES
This board has big problem because Main IC(IC100) have some troubles.
After checking thoroughly all path once again, You should decide to replace Main Board or not.
NO
NO
NO
NO
NO
J703
may have problem. Replace this Jack.
After checking the Power of RGB Video switch, you should decide to replace RGB Video switch or not.
After checking the Power of RGB Audio switch, you should decide to replace RGB Audio switch or not.
After checking the Power of RGB Audio switch you should decide to replace RGB Audio switch or not.
After checking the Power of Main
IC(IC100) you should decide to replace
Main IC or not.
Copyright © 2007 LG Electronics. Inc. All right reserved. | - 26 - | LGE Internal Use Only |
Only for training and service purposes |
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