Problem with a veroboard honey bee

[alfonso_bundis]

Hello everyone,

I build a Honey bee following this layout:

http://2.bp.blogspot.com/-wzJfRxAyO8E/T5bN9Atv0EI/AAAAAAAABSg/Kfn52ftJfnw/s1600/Bearfoot+Honey+Bee.png

However when I tested it I only got noise. The Nature pot seems to be working but I do notice any changes from turning the Drive nor Volume pots.
I believe that this schematic for this vero is similar to this one, only starting from C5:

http://4.bp.blogspot.com/-BGtE8eHdasM/TxCinQLXguI/AAAAAAAAAeI/MjzR0nMy8L4/s1600/hot%2Brodded%2Bhoney%2Bbee%2Bschematic.png

I tried to use a probe and I got clean sound up to pint 3 of CA3130, pin 6 gives only noise.

The voltage readings are the following

T2
d   8.98V
s   8.96V
g   8.14V

IC1

1    8.96V
2    8.43V
3    8.50V
4    8.80V
5    8.96V
6    8.50V
7    8.98V
8    8.53V

any suggestions on what should I try to make it work?


Thanks for your help.

[Kipper4]

No ground?

[PRR]

> No ground?

My guess also.

> d   8.98V
> 2    8.43V

When ALL pins are a lot closer to +9V than to zero, lack of ground seems likely.

[duck_arse]

(..... I smell a rat ......)

interesting use of a ca3130.

++1 on the grounds.

[alfonso_bundis]

Thanks to everyone. I checked myground connections and indeed i had done a mistake with them. Now it is working perfectly