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Hi,

IC1 = TL072              IC2 = TL072                 IC3 = MAX1044CPA
4.6                          4.6                             9.3   
4.6                          4.6                               0 (should be 4.6)
1.2 (should be 3.4)     4.6                               0
0                              0 (should be -8.5V)        0 (should be -4.5V)     
4.5                           4.6                              0 (should be -8.5V)
4.6                           4.6                             4.4
4.6                           4.6                             4.2 (a bit low)   
9.3                           8.2  (should be -16)       9.3       


Moreover IC3 is very very hot. All the electrolytic caps are 25 or 50V. I replaced them all but it changed nothing. I also replaced the zener.
I tried 3 different IC3 but all were MAX1044CPA. I read I should use MAX1044SCPA.
Do you know a place where to buy one with low shipping ?
What's the difference between CPA and SPCA ? Could this explain why my IC3 is so hot ? I can't let my finger on it !

Hi,

I noticed that the gain increased quickly when I turned the pot a little, and after it didn't change.
I used 100K linear.
Did anyone notice this problem ?

I added a swith for the Ruetz mod and it sounds good.

Thanks
Doc'.

Hi,

It will be good to have the PCB size on each pdf project.

Thanks
Doc'.

Hi,

There is a verified schematic available on freestompboxes.
Can you do a PCB ?

Thanks
Doc Plus.