madbeanpedals::forum

Projects => Tech Help - Projects Page => Topic started by: GoldenPotus on August 21, 2016, 06:57:34 AM

Title: Kraken no sound when engaged
Post by: GoldenPotus on August 21, 2016, 06:57:34 AM
I finished putting the Kraken envelope filter together and it passed sound when off but when turned on no sound is passing. I checked my switch and pots wiring and both are correct. I'm assuming it's to do with the ICs but I'm not sure what voltages I should be seeing.
Title: Re: Kraken no sound when engaged
Post by: Jebus on August 21, 2016, 07:18:14 AM
Hello,

Start by checking out this thread: http://www.madbeanpedals.com/forum/index.php?topic=902.0

Post voltages and good quality photos of both sides of PCB.
Title: Re: Kraken no sound when engaged
Post by: GoldenPotus on August 22, 2016, 12:13:33 AM
Okay voltages are measured and something seems odd with IC1
IC1:CA3080     IC2:LM1458      Q1        Q2          Q3
1- 0                 1-5.37             1-4.6     1-0.60      1-5.3
2-5.3               2-5.30             2-4.77    2-5.26     2-5.7
3-5.3               3-5.30             3-9.77    3 -5.27    3-9.77
4-0                  4-0
5-0.60             5-5.3
6-4.42             6-4.3
7-9.77             7-5.3
8-0                  8-9.77

(the soldering on the pots looks bad but the connection is being made)
Title: Re: Kraken no sound when engaged
Post by: GoldenPotus on August 22, 2016, 01:20:57 AM
photos of pcb
https://www.dropbox.com/s/7ut72iseyhg8ive/IMG_6893.JPG?dl=0
https://www.dropbox.com/s/snvjpi11zw0qebc/IMG_6892.JPG?dl=0