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Analogue-sequencer

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Re: LCD going darker...help!!!

2008-04-17 by digitana2002

Hi ..is this a genuine backlit lcd or one of the newer oled/pled
versions? If its a regular backlit lcd sounds like the contrast
control voltage may be intermittant or the lcd is genuinely on its way
out. The contrast control coltage is just a taken from the +5V supply
and is controlled by a small cermet trimpot on the main pcb. I would
imagine this would either work or not but could be a flakey cermet. 
The fact that it brightens after 5-10mins could mean  the lcd is on
its way out or even the 5v supply is perhaps varying over time?
It wouldnt be too difficult to fix either way. I dont know much at all
about how contrast is controlled on oled/pled displays.

cheers
steve

--- In analogue-sequencer@yahoogroups.com, david <mixdown77@...> wrote:
>
> Hi!
> I think my LCD has some problems.
> It's going everyday darker:
> when i turn it on i can't see all the characters,
> and only after 5-10 minutes it becomes a little brighter.
> What could it be?
> It's an hardware problem or do you suggest to reinstall the software?
> Thanks for any help...i'm really worried because I can't live without my
> P3!!!
> 
> 
> [Non-text portions of this message have been removed]
>

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