Problem - unlit screen. With all original modules in place I have on my Y board --VS- 199v VA- 54v VY- 177v VSC- 149 (these are within 1 volt of correct voltages), Z board -- VZB- 40v and drops off (This one is supposed to be 110v). All other PS voltages are ok also. I have tried a replacement Z board. With that in place my VY and VSC voltages drop to nearly nothing on the Y board and VZB on the Z board is still not correct. What are you thoughts? Do I have a bad replacement Z board or possibly is my Y board bad or both Y and Z. Also the logic board (control bd) led flashes 2 short 2 long, repeat. I have a feeling that is a trouble code as from what i have found when set is working properly the led should be constant. Thanks for your help! I really appeciate it. Marv