Soulsby Synths Forum

Technical Support => miniAtmegatron Hardware technical support => Topic started by: nnay13 on September 02, 2015, 08:34:43 PM

Title: D1 LED: Yellow is missing ?
Post by: nnay13 on September 02, 2015, 08:34:43 PM
Congratiulation the miniArmegatron  is great  ;D . 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 ?   

Title: Re: D1 LED: Yellow is missing ?
Post by: OpAmp on September 02, 2015, 10:30:25 PM
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?
Title: Re: D1 LED: Yellow is missing ?
Post by: nnay13 on September 03, 2015, 06:33:48 PM
Hi,
The Green position is Pink. :o 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  ;D

Title: Re: D1 LED: Yellow is missing ?
Post by: paulsoulsby on September 03, 2015, 08:12:15 PM
So the left LED is RGB, the right LED is RGB, but only uses red and green (no blue).

Here's the PCB layout.

(http://i173.photobucket.com/albums/w52/soulsbysynths/Screen%20Shot%202015-09-03%20at%2020.04.14_zps0ifkvh8k.png)

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
Title: [SOLVED] D1 LED: Yellow is missing ?
Post by: nnay13 on September 04, 2015, 07:48:06 PM
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