Thanks Bob. I had a look tonight. All I get on that pin is a noise looking wave. I was reading some earlier messages on this forum last night and thought I would probe r152. (Vco input) all I get on that resistor is a saw tooth wave shape about -8 dc. But what is weird is that when then oscilloscope probe is touching that resistor I get sound out the headphones for that oscillator. I can change the wave shape of that wave and alter it with the filter. Still just the same tone (key) though. This seems to be pointing to a faulty 14051?Also when I put the hold button on and push sound keys (1 after the other) all the oscillator diode lights turn on) I would have expected the previous one to turn off when the next one turns on...
Not sure what to make of this as yet.
Thanks again.
