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| Replacing the CCFL in the Pismo? |
Posted by: FacnyFreddy on 2016-12-18 16:08:16
I have a "dark corner" that has developed on one of my Pismo laptops.
Is this a result of a bad LCD or the CCFL? I seem to recall it was the CCFL from prior discusion.
How hard is it to swap out the CCFL? Or maybe even rebuild/rework the display driver board?
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Posted by: IlikeTech on 2016-12-18 16:11:19
You might consider replacing the CCFL with a led solution and remove the backlights inverter altogether.
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Posted by: unity on 2016-12-18 17:00:59
The light is along the bottom if I recall. If its one side, then it might be the inverter only outputting one side. But it could also be a bad tube. Typically the display will also start shifting to pink or be very slow to warm up when the lamp is going bad.
Not sure how an LED solution would work and the diffuser plate is not designed for it. But it might.
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Posted by: Byrd on 2016-12-18 20:59:00
You could probably pickup a "dead" Pismo (which in 80% of cases is bad PRAM settings, fixed by disconnecting the PRAM battery) more cheaply for the LCD than looking out for a CCFL/LED replacement, which isn't an easy task.
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Posted by: FacnyFreddy on 2016-12-19 16:18:22
You might consider replacing the CCFL with a led solution and remove the backlights inverter altogether. How would this work? Just run a ribbon cable through it and avoid the inverter and tap directly into the LED? Would I lose the ability to "dim" the display?
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Posted by: IlikeTech on 2016-12-19 16:28:47
I'm not entirely sure how it would work, I'm just saying it might be a good idea, and yes, you would bypass the ccfl driver.
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