DIY experimenter board white noise issue

lowbis · Joined: Aug 30, 2016 Posts: 1 Location: AK

Hi! I'm new at this hobby, and just joined the forum... I built the white noise part of the DIY experimenter board, and it's super loud/solid when I power it on, and then the volume starts fading after about 10 seconds... Any ideas what might be causing that? I did put a 2.2uf bi-polar cap in instead of the 1uf that's called for while i'm waiting for them to arrive, but that's the only thing that's different from Ray's schematic... Thanks!