Hello Guys im frustrating with my bloviator project, the main issue is that i got the same result in bypass mode and with the effect is engaged , i take several voltages with out the ic,s and the pot's at 12 o'clock. The version of the PCB is dated 06/01/11 the single side pcb.
Wall adapter voltage 9.48v
IC1
1. -0.01
2. -0.0
3. 0.01
4. 0
5. 0.02
6. 0.01
7. 0.01
8. 8.45
IC2
1. nothing
2. 0.01
3. 0.01
4. 8.45
5. 0.02
6. 0.01
7. 0.01
8. 0
9. 0
10. 0
11. 0
12. 0
13. 0
14. 0
IC3
1. 0
2. 0.01
3. 4.37
4. 0
5. 0
6. 0
7. 0
8. 0
After this read i add the ic3 for check the voltages in "vB" im using a TL072 instead the TL071 (This could be the problem?)
VB Voltage in al the points was 1.32 - 1.27
Someone can help me
Thanks in Advance
Check out the pinout for the 71 vs the 72, I believe they are different.
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hey jimilee you are right the pinout is different, Will change the ic and check if can here a difference
71/72 pinouts are vastly different. That's a big part of your problem right there.
If you substitute a part, make sure to check the datasheet for both the original and your substitution, to check that the important stuff matches.