[sdiy] back-light troubles

[Heitor Alves]

Can you try another EL inverter? my guess is that your EL inverter is
mal functioning.

good luck

heitor


On Sat, 26 Feb 2005 23:27:18 -0500, tuj <tuj at fuse.net> wrote:
> Hi all:
> 
> I'm having problems with the back-light on an LCD display.  The light will
> turn on for about half a second when the unit is first turned on, and again
> for about half a second when the unit is turned off.  Its the typical
> yellow-green EL type back-light.  Finally, if I hold the switch in a
> certain spot very carefully when powering off, I can get the back-light to
> stay on, and I can hear a strange humming sound from either the power
> supply or the oscillator driver for the back-light.  I've verified
> continuity between the back-light and the oscillator pin outs, and wiggling
> the connections didn't change anything, so I think I can rule out the
> cable/connections.
> 
> Right now I suspect that possibly a capacitor in the oscillator section is
> bad?  I really don't know much about back-lights, could someone venture a
> diagnosis?
> 
> Thanks!  -tuj
> 
>