backlight does not work after lcd disconnect
I have disconnected the LCD without disconnection it from the battery....stupid. But OK now I have the common problem of not having a backlight.
I have had this problem before a year ago but then it came up "by it self" after a while.
What id did so far without result:
- power off/on
- reset settings
- hard reset
- disconnect from battery for a night
- checked connection of ribbon cable
- Replace the filter and the coil.
Before replacing the filter and coil I already had a voltage level of approx. 3.8V at the backlight pins / outlet of filter. So my guess was replacement of filter / coil should not be required. But I did anyhow but without result. Still after replacing I have a voltage level of 3.8 after filter, diode, coil and before the coil. I did not replace the diode as it is blokking in one direction and "open" in the other.
So there is no 18V available... So what else can I do, besides using the Ipad as an advanced cutting board?
Is this a good question?