Author Topic: Collosalus Problem Help!  (Read 984 times)

mickey.bellinello

  • Transistor Tickler
  • **
  • Posts: 59
    • View Profile
Collosalus Problem Help!
« on: August 20, 2019, 11:32:21 AM »
Hi to all!

Here I am with another problem! I just built my Collosalus, it works but there are some problems.
I tried to set it but I have a "going" sound at a certain point of the sweep, the regen control seems to not work at all...so...I made some measurement and I found some Voltage errors.
I power my collosalus at 9V. Here the measurement:

IC1:
Pin1-7.43
Pin2-7.31
Pin3-7.32
Pin4-0
Pin5-6.80
Pin6-7.28
Pin7-7.28
Pin8-14.73

IC2
Pin1-7.37
Pin2-7.38
Pin3-7.33
Pin4-0
Pin5-7.46
Pin6-7.37
Pin7-7.38
Pin8-14.73

IC3
Pin1-varies
Pin2-7.51
Pin3-varies
Pin4-0
Pin5-7.62
Pin6-7.63
Pin7-varies
Pin8-14.72

IC4
Pin1-7.29
Pin2-7.29
Pin3-7.21
Pin4-0
Pin5-7.33
Pin6-7.38
Pin7-7.42
Pin8-14.73

IC5
Pin1-14.73
Pin2-7.10
Pin3-7.14
Pin4-7.14
Pin5-7.20
Pin6-7.16
Pin7-7.16
Pin8-0
Pin9-7.16
Pin10-7.12
Pin11-7.16
Pin12-7.16
Pin13-mv
Pin14-7.16
Pin15-7.12
Pin16-mv

IC6
Pin1-7.18
Pin2-7.20
Pin3-circa12-14
Pin4-0
Pin5-7.20v
Pin6-0
Pin7-0
Pin8-14.72
Pin9-14.72
Pin10-10circa
Pin11-14.72
Pin12-circa12-14
Pin13-14.72
Pin14-14.72

IC7
Pin1-17.76
Pin2-0
Pin3-14.73

IC8
Pin1-1.9
Pin2-4.82
Pin3-0
Pin4-mv
Pin5-mv
Pin6-2.56
Pin7-1.44
Pin8-9.37

IC9
Pin1-14.72
Pin2-7.14
Pin3-8.22
Pin4-1.5
Pin5-0
Pin6-7.12
Pin7- 7-8 circa
Pin8- 7-8circa

I marked in red the totally wrong value.

Any ideas?

Thanks