tonepad tubescreamer help

[Lizard King]

This is my second tonepad tubescreamer.  I wanted more base so I increased the .047uf cap between Vb and the tone stack to .47 and changed the resistor from 4k7 to 2k2.

The tubescreamer doesn't scream at all.  I get a slight DECREASE in volume when I kick it in.  Did my mod do that or did I screw something else up? 

I'm using a generic 4558 from Tayda.  I haven't measured voltages at pin but the V+ and Vb are good - 9V & 4.5V.

As always, thanks a heap!

[Kipper4]

It would be a whole lot better if you went to the "debugg  what to do when it doesnt work thread and report back with more info please.

[Lizard King]

Thanks.....already figured it out.....couldn't find out how to delete a post......sorry.

[Kipper4]

let us know what it was then please it might help someone in future
thanks
Rich

[lizardking]

D'OH....I found some bad solder joints, fixed those and replaced the out of spec parts I was using to try and get more bass. STILL at unity gain.

I won't report back until I have ALL the information required to debug.