Doepfer

Yes, I've replaced leds in all of my modules with blue leds, I've 
even fitted blue 7 segment displays to the A-113 subharmonic 
generator and a blue LCD display to my Schaltwerk sequencer as well 
as 200 rectangular blue leds - not for the faint hearted! (see files 
area of Schaltwerk Yahoo group for pix of this mod)

For standard modules use 3mm Blue leds, if your UK get them from 
Rapid electronics, Kingsbright L-934m series at 70 pence each. No 
need to worry about changing current limiting resistors, they just 
drop straight in.

Be particularly careful on the modules that use double sided pcb's, 
the tracks are very thin and easily damaged - easiest way to remove 
the old led is to heat both pads simultaniously with soldering iron 
and then very carefully pull led out. Then use a de-soldering braid 
to remove the old solder from the holes before inserting the new led.

Hope this helps,
Allan

 part  in the--- In Doepfer_a100@yahoogroups.com, "John Talbert" 
<jvtalbert@y...> wrote:
> Hello all,
> 
> Has anyone here actually done the "red to blue" LED replacement 
work?
>  Are there any specific issues that I should be aware of?  I've got
> three or four modules that I need to update soon.
> 
> Kindest regards,
> John