Dell

Dell
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Dell SE198WFPf backlights go off after 2 seconds after power on. You can turn it off, then back on again and get light for 2 more seconds, then back off again. Light stays blue. Not a problem with the PC. No caps that show any sign whatsoever of bulging or leaking. What else could cause this? Could a cap be bad but show absolutely no sign of it?

Posted by HighTKrdNeck on Nov 21, 2010

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Dell

Product Troubleshooting for Dell



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Ok, I have now had 2 different Dell SE198WFP monitors with the same problem (shutting down after a couple of seconds) and I had to read numerous posts on numerous blogs looking for a solution to this "problem" before I actually figured it out. Everything that I'd read suggested bad capacitors on the inverter board (and I'm sure that this is an issue, but it wasn't mine.) After replacing all of the caps on the inverter I still had the same problem. Long story short, I found (on both of my SE198WFP monitors) that at least one of the four CCFL backlight tubes had a burnt wire on the end of it. Period. Now I'm not sure if this is a common problem with this monitor or not, but it was in fact the problem with both of mine, and after fixing these wires both monitors now work just fine :-) It seems that all four CCFL's have to pull the same amount of current or the inverter trips the overload and just shuts itself down. I hope this helps!! "And good hunting" :-)
Ok, I have now had 2 different Dell SE198WFP monitors with the same problem (shutting down after a couple of seconds) and I had to read numerous posts on numerous blogs looking for a solution to this "problem" before I actually figured it out. Everything that I'd read suggested bad capacitors on the inverter board (and I'm sure that this is an issue, but it wasn't mine.) After replacing all of the caps on the inverter I still had the same problem.
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