Barco Data 701. I had just finished filling blue tube with fresh coolant. It had suffered a major leak and was unuseable. The glass was removed from the crt and cleaned. The silicon was left for two weeks before refilling the tube. The projector was put back together and everything appeared to be working fine. The projector had been running for around 20 minutes with no problems when suddenly pop! followed by shutdown. This is a real pity as the green and red tubes are like new and the chassis has done less than 2000 hours. Would anyone like to speculate as to what went wrong ? Have I slipped up somewhere along the line ? Is the failure just a coincidence ? The cracks appear to be behind the glass face looking like they are in the coolant itself.