26-12-2020, 10:10 PM
(26-12-2020, 05:47 PM)g67wjjk Wrote: It seems that I had a DIY kit. Removing the RGB+I-to-Analogue adaptor board I immediately noticed some dodgy soldering by, ahem, me.
Pin 9 of U2 (MAX4619 analogue multiplexer) was unsoldered, and the middle pin of the 7805 (ground) looked dodgy too (although the chips seemed to be powered okay).
For future projects with similar sized PCB pads someone suggests that you use a thinner gauge of solder such as 0.71mm and a suitably wide chisel or double chisel soldering tip.
Investing in a bottle of suitable liquid flux and flux remover is also very useful.