I've got an old 42 inch backlight array with inverters i was going to hack together into a coffee table infinity table.
Powering with a 24v 9a adapter and 3.8v to on/off only succeeds in illuminating for two seconds before a shut down, i read about this elsewhere on the site and apparently people had success bypassing a controller IC designated oz*something by applying 2v to pin 1 after lifting it from the PCB, i found oz9982gn on mine but couldn't find solid data on pins or required voltage. I measured it in circuit and at power on it goes to ~150v(?!) And then down to 4.8v steady.
I tried lifting it and applying a steady 5v but the circuit doesn't complete, pretty sure I'm using the wrong pin.
Anyway; is there a better way than going ac-dc-ac?
Can you power the ccfl's directly or with a simple (cheap) adapter from 240v AC?
Otherwise is there a way I can bypass the protection and cram the 24v into the transformers whether they want it or not?
Thanks guys
Powering with a 24v 9a adapter and 3.8v to on/off only succeeds in illuminating for two seconds before a shut down, i read about this elsewhere on the site and apparently people had success bypassing a controller IC designated oz*something by applying 2v to pin 1 after lifting it from the PCB, i found oz9982gn on mine but couldn't find solid data on pins or required voltage. I measured it in circuit and at power on it goes to ~150v(?!) And then down to 4.8v steady.
I tried lifting it and applying a steady 5v but the circuit doesn't complete, pretty sure I'm using the wrong pin.
Anyway; is there a better way than going ac-dc-ac?
Can you power the ccfl's directly or with a simple (cheap) adapter from 240v AC?
Otherwise is there a way I can bypass the protection and cram the 24v into the transformers whether they want it or not?
Thanks guys
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