I had changed the IC (ICT 18CV8-25) recently bcoz it has blowed. The technician at my local shop successfully do it for me bcoz i have no skill to install that tiny IC on Empeg. But there was another problem. The display cannot working very well (garbled). It has power but cannot display any character. I attach the file here (AVI DivX file showing the problem)

All 3 fuses are in good condition. The display VFD in good shape too. Remote sensor & volume switch also work fine. Can the display cable cause this problem?

Or is there any other IC can cause the display cannot working perfectly? Where can i get the diagram of Empeg board? The technician cannot check it without the diagram. I really love my Empeg. Please help ASAP.