hi
many thanks for your replies btu still no luck.
i have tried it with an A500, A500 plus and A1200. I also tried with 4 different amiga power supplies (2 heavy, one light, one goliath) for each amiga and tried with the accelerator removed in the A1200 and still the same problems. The RocGen Plus documentation says that it will operate without a stable incoming video signal by generating its own sync. Without a stable incoming video signal would some genlocks prevent an Amiga from boring ?
I may have a bad unit. I will try a few more combinations.
Thanks again for your help.