I have a Dell E156Fpb 15" monitor that I suspected had a CCFL gone bad causing it to shut down after 2 seconds. It did in fact have a bad CCFL on the bottom side, however, after replacing it with a good CCFL I found the same symptom (shutdown) exists when the VGA cable is connected. If I release the VGA cable, the CCFL's light back up. So far, here is what I have done in terms of troubleshooting:
1. swapped out the controller board from another E156Fpb with no changes in symptoms.
2. searched for similar issues with no luck.
3. replaced the two C5707's and the FU9024N on the inverter. Nothing.
4. resoldered all the pins on the two transformers.
Suggestions at what to look at?
1. swapped out the controller board from another E156Fpb with no changes in symptoms.
2. searched for similar issues with no luck.
3. replaced the two C5707's and the FU9024N on the inverter. Nothing.
4. resoldered all the pins on the two transformers.
Suggestions at what to look at?
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