Dotcomformat

Thanks Doug and Yves. (sounds like a early American artist's name)

I have all three chips on order just in case. The 4006 got really warm on that first power-up. That is what made me inspect them closer. I'll replace them all. 

If this is indeed the fix then I feel pretty lucky. I haven't actually made a kit like this (albiet pretty simple) since the 1980's Heathkit amps and PAIA P4700J build. I've just been doing small breadboard mods and stuff. I feel like a beginner again. New Weller solder station and all. Fun return to an old passtime hobby.

Thanks guys for inspiring me to get going again on DIY stuff.

-David

--- In dotcomformat@yahoogroups.com, yves usson <yves.usson@...> wrote:
>
> Hi David
> 
> Yes the CD4070 must have been damaged, when you reversed it you also had 
> it reversed powered which is something CMOS ICs don't like at all ;-)
> 
> I suggest that you replace the CD4070.
> 
> Yves
> 
> Le 23/01/11 23:50, drryle a écrit :
> > I am a rank beginner. I've built the Yves Usson YuSynth Random Gates
> > module kit from Bridechamber and it has a bit of problems.
> >
> > http://yusynth.net/Modular/EN/RANDOMGATE/index.html
> >
> > The gate input indexes but it isn't random. I am getting a repeating
> > pattern. The pattern changes after a long power down but it still repeats.
> >
> > Firstly, I'll admit the real problem is two-fold. My skills and the fact
> > that (this is important) I actually had the XOR gates chip (CD4070) in
> > backwards! Luckily I refuse to make anything now without good sockets so
> > I simply reversed the chip and tried it again.
> >
> > Is the CD4070 zapped or is there something else to look for?
> >
> > -David
> >
> >
> -- 
> Yves Usson
> http://yusynth.net
>