Author Topic: D1 LED: Yellow is missing ?  (Read 1326 times)

D1 LED: Yellow is missing ?

« on: September 02, 2015, 08:34:43 PM »
Open quickbuttons

nnay13

Posts: 5

Offline
  • *
  • Newbie
    • View Profile
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 ?   

« Last Edit: September 04, 2015, 07:48:20 PM by nnay13 »

Re: D1 LED: Yellow is missing ?

« Reply #1 on: September 02, 2015, 10:30:25 PM »
Open quickbuttons

OpAmp

Posts: 4

Offline
  • *
  • Newbie
    • View Profile
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?

Re: D1 LED: Yellow is missing ?

« Reply #2 on: September 03, 2015, 06:33:48 PM »
Open quickbuttons

nnay13

Posts: 5

Offline
  • *
  • Newbie
    • View Profile
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


Re: D1 LED: Yellow is missing ?

« Reply #3 on: September 03, 2015, 08:12:15 PM »
Open quickbuttons

paulsoulsby

Posts: 180

Offline
  • Administrator
  • *****
  • Full Member
    • View Profile
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
« Last Edit: September 05, 2015, 06:57:15 AM by paulsoulsby »

[SOLVED] D1 LED: Yellow is missing ?

« Reply #4 on: September 04, 2015, 07:48:06 PM »
Open quickbuttons

nnay13

Posts: 5

Offline
  • *
  • Newbie
    • View Profile
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