Picade: Right speaker makes humming noice


#1

Hello,

yesterday, my friends and I put the Picade together and it was a lot of fun! Thanks for this amazing kit.

I just have one issue: The right speaker makes humming noices. So far I’ve tried the following things:

  • Connect headphones to the raspi -> Audio works as expected
  • Changed the audio cable which connects the raspi and PCB -> No improvement
  • Switched the physical speakers on the speakers output. -> now the physical left speaker makes the humming noice.
  • The same issue occurs when I connect my headphones to the PCB output.

My problem seams related to the this one: http://forums.pimoroni.com/t/dodgy-speaker-maybe

Please have a look at the following photos of my PCB in case it is the same issue with the PCB.

Kind regards,
Peter


#2

Yes, I think it could be the same cause. Try to dab a bit of solder on the Audio In connector on the long side, particularly the pair of anchor points on the left.

If the problem remains, send an email to support@pimoroni.com pointing them to this topic.


#3

Just to be sure: You mean the anchor points I’ve highlighted in the following image?


#4

yes, though feel free to touch up those on the other side if they look flaky.


#5

Hi

You might like to re route the black wire over the amplifier chip too as I found that created noise.

Cheers

Paul


#6

Soldering helped. :-) Thanks you two the quick responses!