I have a Intervideo/Videocolor monitor (Ref: Dual Frequency Philips A66EAK552X11) and I had been using a JPAC for a while now with soft 15KHz and quickres without any problems. Jumper on 15KHz and 35KHz.
A month or two ago whenever I turned the cab (1 out 5 times perhaps) the image would be out of sync and I had to regulate the h-sync. It was annoying but I lived with it.
Now whenever I turn it on the image is out of sync and I can't get it right! The only significant change I made was connect the remaining 6 buttons I had in my CP to the JPAC screw connectors. I already tried to disconnect them but I can't get the monitor to work.