To cut right to the point:
Is there a way I can tell if the problem is the inverter before buying a new one? The inverter is getting 25VDC, and the SMT fuse is fine. I don't measure any voltage going to the lamps, what should this voltage be? There are 2 conductors coming from the logic board that I assume are an on/off signal; any way to "jump" these on so I can be sure the problem isn't just a lack of this signal? Got a few old laptops laying around, could I harvest an inverter from one of these?
Long Version:
I have a Dell 17" display that has been acting up and getting worse, seemingly bad caps. It would take a long time (eventually hours) to start up and even the power led would come on for usually just a split second before going off. During this extended power on phase I would get a bit of light flickering.
Well I replaced all the 1000uF caps, and it started to act normally except no backlight. Replaced the 2 caps on the inverter board, one of which was bulged a bit, and still no joy. I do get 25VDC to the inverter board (and through the little SMT fuse on it), which seems right as this is what the caps were rated at. The are only 2 other conductors going to the inverter are signals from the logic board, which I assume are on/off signals
Thanks!
Is there a way I can tell if the problem is the inverter before buying a new one? The inverter is getting 25VDC, and the SMT fuse is fine. I don't measure any voltage going to the lamps, what should this voltage be? There are 2 conductors coming from the logic board that I assume are an on/off signal; any way to "jump" these on so I can be sure the problem isn't just a lack of this signal? Got a few old laptops laying around, could I harvest an inverter from one of these?
Long Version:
I have a Dell 17" display that has been acting up and getting worse, seemingly bad caps. It would take a long time (eventually hours) to start up and even the power led would come on for usually just a split second before going off. During this extended power on phase I would get a bit of light flickering.
Well I replaced all the 1000uF caps, and it started to act normally except no backlight. Replaced the 2 caps on the inverter board, one of which was bulged a bit, and still no joy. I do get 25VDC to the inverter board (and through the little SMT fuse on it), which seems right as this is what the caps were rated at. The are only 2 other conductors going to the inverter are signals from the logic board, which I assume are on/off signals
Thanks!
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