We have a DLPC4422 based projector which intermittently gives SYNC errors after which the image is no longer displayed. We can address the problem by recycling the power on the PC/Projector but this is very inconvenient as it restarts everything. We have tried various options in the DLPC4422 GUI software but can't find anything that will recover from the sync error and show the image again. Is there some magic sequence that works in the GUI?