Hi Hotwaterwizard, many, many thanks for your search about TY30294 replacement. I surpised me the equivalent UA1458P, MC1458P, LM1458N and CA1458E all very popular IC. I thought TY30294 was a customized chip that Motorola manufactured just for G30-12A Farnell Power Supply. I tried some dual OpAmp but without success. mesenger