Re: Dell E172fpb
Hi folks
I'm new to this forum - but not to monitor faults!
I have had this problem in the past, with other monitors with a backlight...it seems that the cold cathode backlight tube dies & cannot conduct...thus allowing the voltages at the transformer driver transisters to rise above their working voltages due to no load & fail......
Is it possible to replace the cold-cathode tubes in these particular screens?, if not I suspect it is all a waste of time. A new screen will cost more than the monitor & you still have to change the transisters too...
In this one that I have just opened up the same Q759 & Q760 are shorted all ways!
Bob UK
Hi folks
I'm new to this forum - but not to monitor faults!
I have had this problem in the past, with other monitors with a backlight...it seems that the cold cathode backlight tube dies & cannot conduct...thus allowing the voltages at the transformer driver transisters to rise above their working voltages due to no load & fail......
Is it possible to replace the cold-cathode tubes in these particular screens?, if not I suspect it is all a waste of time. A new screen will cost more than the monitor & you still have to change the transisters too...
In this one that I have just opened up the same Q759 & Q760 are shorted all ways!
Bob UK
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