Vintage Synth Explorer Forums

I wonder if anyone can help me on this.

After say 20 mins osc 2 becomes unstable and eventually cuts out.

pots and joints seem ok.

I posted schems on the above sticky.

Could only speculate.

It should go on a bench.

But, I'd start at the 1458 op amp and trace back from there.

atkbg wrote:Could only speculate.

It should go on a bench.

But, I'd start at the 1458 op amp and trace back from there.

Cheers...The 1458's are ok and i have checked the area for bad joint and so.

So it's something that warms up and stops the oscillator working.