the oscilator in question is a sine/square wave generator catNo K7338 that I perchest from dicksmith electronics it uses a twisted ring counter set up to tern a square wave into a steped square wave and a butterworth low-pass filter(MF4CH-50 IC) to smooth out this signal into a fairly nice sine wave now this is where the problem occours I can find a sine wave at the out put of the MF4CH-50 but the signal just seems to end after a RC circut just after this IC I have cheched the solder joints a thousand times and cant seem to see any probs there? please help. and thanks for reeding this post.