I am having a nightmare trying to track a fault which is preventing turning on my dainichi BX35.

I have tried to bridge the P1 P2 relay bypass link on the input board but the crt is still not coming on despite now having 200V supply. I have checked the main CPU Power Supply CN17 all voltages are within limits but still there is no power led or Watch dog Led on the main cpu Board and the 7 segment display is displaying 8 this condition is not in the book ???

Would appreciate some help.