I have a few inverters from broken laptop screens (Dell Latitude LS model) and there are no datasheets that I can find for the controller IC (3972 OAW). There are only four input pins for the inverter board and I think that it might be possible to figure enough out to connect it to power without breaking it and then experiment to turn it on.
I've found what I believe is the ground pin because it's connected to that big metal area of the board that the screw goes through into the laptop chassis.
I don't know, but I suspect the pink pin is VCC. It's connected to the coils and to a giant SMD-capacitor looking thing which can't be a capacitor because it's two terminals are shorted and that's probably not a fault because it's the same on the other boards. But the pink seems to go backwards through a diode (D2) so maybe it can't be VCC? Also it goes directly to a leg on the IC and I bet that won't run off ~12 V so maybe blue is a better candidate?
The other two pins must be the ON/OFF or STDBY and the DIM pins but I think it will be possible to just apply 3 V to either and see what works?
I think I can apply, like, 12 V to the power pins and different combinations of 3 V and 0 V to the other two, right?
(Of course I will take measures not to shock myself)
I've found what I believe is the ground pin because it's connected to that big metal area of the board that the screw goes through into the laptop chassis.
I don't know, but I suspect the pink pin is VCC. It's connected to the coils and to a giant SMD-capacitor looking thing which can't be a capacitor because it's two terminals are shorted and that's probably not a fault because it's the same on the other boards. But the pink seems to go backwards through a diode (D2) so maybe it can't be VCC? Also it goes directly to a leg on the IC and I bet that won't run off ~12 V so maybe blue is a better candidate?
The other two pins must be the ON/OFF or STDBY and the DIM pins but I think it will be possible to just apply 3 V to either and see what works?
I think I can apply, like, 12 V to the power pins and different combinations of 3 V and 0 V to the other two, right?
(Of course I will take measures not to shock myself)
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