Tonepad CE2 clone debugging

[wavenator]

            Q1
P-1 -08.7
P-2  -02.8
P-3 -01.1

          Q2
P-1 -03.0
P-2 -03.2
P-3 -08.4

      Q3
P-1 -08.2
P-2 -03.2
P-3 -03.5

         Q4
P-1 -08.2
P-2 -03.4
P-3 -04.8

           Q5
P-1 -06.8
P-2 -00.0
P-3 -00.3


        TL072
P-1 -06.7
P-2 -04.1
P-3 -04.8
P-4 -00.0
P-5 -08.2
P-6 -04.6
P-7 -03.2
P-8 -04.0

       RC4558P
P-1 -04.4
P-2 -04.4
P-3 -04.4
P-4 -00.0
P-5 -08.2
P-6 -07.1
P-7 -00.2
P-8 -04.2

          NM3101
P-1 -08.1
P-2 -04.1
P-3 -00.0
P-4 -04.2
P-5 -00.5
P-6 -02.7
P-7 -07.2
P-8 -00.3

      NM3007
P-1 -08.1
P-2 -04.2
P-3 -03.2
P-4 -00.5
P-5 -03.0
P-6 -03.0
P-7 -04.1
P-8 -00.0


http://www.tonepad.com/getFileInfo.asp?id=101


thx a lot

[anchovie]

Er...what's the actual problem?

[wavenator]

dunno why but i cant edit my topic
anyway the new reads are:
TL072
P-1 -06.7
P-2 -04.1
P-3 -04.8
P-4 -00.0
P-5 -04.0
P-6 -03.2
P-7 -04.6
P-8 -08.2

       RC4558P
P-1 -04.4
P-2 -04.4
P-3 -04.4
P-4 -00.0
P-5 -04.2
P-6 -00.2
P-7 -07.1
P-8 -08.2

          NM3101
P-1 -08.1
P-2 -04.1
P-3 -00.0
P-4 -04.2
P-5 -00.3
P-6 -07.2
P-7 -02.7
P-8 -00.5

      NM3007
P-1 -08.1
P-2 -04.2
P-3 -03.2
P-4 -00.5
P-5 -00.0
P-6 -04.1
P-7 -03.0
P-8 -03.0

about the problem:
bypassed - works
effect - nothing, a little humming

[BAARON]

1. Are your voltages all negative because you had your multimeter backwards, or because the power supply is backwards and you left out the reverse polarity protection diode?

2. Have you played with the trim pot on the board yet to set the bias?

[wavenator]

its just a hyphen
i've played the trimmer, does not affect at all

[geertjacobs]

maybe you can try using an audio probe and find out where the signal is lost.

[anchovie]

maybe you can try using an audio probe and find out where the signal is lost.

     ^
     |
     |
Do this, rather than starting a new topic for the same problem.

[geertjacobs]

If you can try the audio probe and tell us what happens at the input and output of IC1a and IC1b, that could give a good idea of what is going wrong.