Have a lap band at time of surgery a hiatal hernia was repaired now hernia is back can it be repaired again without damaging the lap band?

Yes: Repairing the hole at the place the esophagus comes through the diaphragm should be possible withe the band in place. I'd suggest seeking a surgeon with davinci robotic capability. It's minimally invasive and will allow good view of the region in 3d view.

Hiatal hernia: Yes, you can have surgery to have your hiatal hernia repaired even if you have a lap band in place. If you happen to have a huge hiatal hernia, the band may have to be removed, the hernia repaired, and the band put back on (all during the same operation).