I've tried everything (cleaning CPU, Vampire socket). Also tried completely removing CF adapter, no success. A600 works fine with Kipper's 4mb Fast RAM expansion. The only option left is so try flashing Vampire via USB Blaster (ordered via eBay). HDMI Cable, this: http://www.ebay.ca/itm/111913220816
works well. Once you remove RF Modulator, use 3M car molding tape (as base) and plastic tie to secure female end of the cable.