D1 LED: Yellow is missing ?

[nnay13]

Congratiulation the miniArmegatron  is great  . Soldering the LED is quite tricky .   The D2 LED is able to  flash green , but the D1 one  has only a pale pink to offer at the  AMPLITUDE ENVELOPE position.

Is the LED somehow damaged ?   

[OpAmp]

Hi,

I just ordered my kit few day ago. Very much looking forward to get it shortly... so I can not compare.

Not sure whether other members can comment on questions...

But, it is an RGB led. If you scroll through the functions and you see all the 3 primary colors clearly (red, green, blue) according to their coresponding function, I would think the led is fine. Maybe the color mixing is not ok? That is done via the resistors. You may check those again?

[nnay13]

Hi,
The Green position is Pink. I'll check the resistor again .A PCB picture  would be appreciate : after soldering, the reference are masked by the resistor itself .

Anyway the sound is so good  despite the pink issue 

[paulsoulsby]

So the left LED is RGB, the right LED is RGB, but only uses red and green (no blue).

Here's the PCB layout.



If you think that 1 LED colour isn't working, double check that the solder pads aren't soldered together.  You can also test this with a multimeter - check all combinations of pads and make sure none are connected.
Paul

[nnay13]

Problem solved. 

 I used  unsoldered the LED . Re-solder it and used a precision  knife to cleary mark the LED pads .

Many thanks for your help