[sdiy] LEDs dying in LCD alphanumeric display

[MTG]

If you didnt put in current limiting reistance you could be killing it...?

GB
www.musictechnologiesgroup.com


----- Original Message ----- 
From: "Adam Inglis" <21pointy at tpg.com.au>
To: "synthdiy diy" <synth-diy at dropmix.xs4all.nl>
Sent: Saturday, November 05, 2011 7:43 PM
Subject: [sdiy] LEDs dying in LCD alphanumeric display


> Why would the LEDs that backlight my Proteus' 2x16 LCD display slowly  
> die from left to right over the course of a couple of weeks? Seems  
> like an odd failure mode. The LCD works and responds to contrast  
> control. The 5 volt supply for the LED circuit is separate from the  
> LCD supply, but they both measure up fine.
> 
> It's one of these...
> http://www.densitron.com/displays/Alphanumeric_LCD.aspx
> 
> Can you crack these open and replace the LEDs or do you replace the  
> whole unit?
> 
> cheers
> Adam
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