GGG klon failure

[Colman]

Hi everybody .I had to re-register but under another name cause it's been long I forgot the password( I was originally Aharon).
So after many years I decided to build A GGG klon,got the kit from JD and started to work.I had high hopes but it didn't work.
I built the true bypass option.
Symptoms are: no signal either way engaged or bypass, not even hiss or hum,although there was some scratchiness on the gain pot when turned(very faint).
Indicator light works.
Voltages are as follows:

Battery:8.58V
IC1:  1-4.27
        2-4.25
        3-1.17  !!!!!!! should be3.6V
        4-0
         5-4.13
         6-4.23
         7-4.21
         8-8.45
IC2:   1-4.20
          2-4.20
          3-4.16
          4- -7.93
          5-4.15
          6-4.20
          7-4.22
          8-14.91
IC3:   1-8.41
         2-4.30
         3-0
         4- -3.88
         5- -7.90
         6-3.40
         7-4.08
         8-8.38
         

[Govmnt_Lacky]

Rule of thumb (for a true bypass circuit):

If you are getting no signal when the effect is bypassed, then you have an issue with the 3PDT, its wiring, the jacks, or the wiring going from the jacks to the 3PDT.

[Colman]

Thanks for the answer.I put another 3PDT and another output pot rewired everything ,also put in new TLO72s ,now I got hiss no signal either way so I'm going to recheck wiring as suggested.
Thank you
Aharon

[Colman]

Thanks for your suggestion ,now it works ,it was an input jack wiring problem,I feel sooooooo dumb   .
Thank you again Govmnt-Lacky
Aharon

[Colman]

I tried it yesterday plugged into my DIY champ (running a 12" eminence).Sounds good to say the least. I was lucky I found some 1N34A in my parts box so that's what I used.All in all a fun project, thanks JD and Gvmnt Lacky
Aharon

[duck_arse]

..... and, welcome to the forum!


but post build docs, please, when asking questions.

[Colman]

This is the klon from general guitar gadgets, sounds awesome and like I said I had some 1N34A diodes from the 90s still and installed those in the PCB.
The quality of the kit was top notch ,no missing or wrong pieces,I thank JD again.The build docs can be found at the GGG site.
Aharon