Nanao MS9-29 no blue

[Still Green]

Hey guys went to turn on the new Astro city today and I am getting no blue color. Tried adjusting the blue gain and cutoff on the chassis to no change. Also tried different PCBs and still no blue. Besides a reflow of the neck board what else should I be checking.

 

[trashedcabs]

If you're missing a color the basic checklist should go like this:

-Check wiring
-If remote board has color pots, check remote board wiring, pots, header etc
-Check video input header solder (common physically damaged connector)
-Check color drive transistor on neck board
-Check all passives in the color path (caps resistors etc)
-Check tube health on rejuvenator