Hmm.. quite possible, but I'm really suspecting the connector. The easiest fix, relatively. Spares a plenty, though- I still have several chassis/ tubes to fix up. After all, this was junk from the parking lot of an ops.. So I'll give that a try if the connector reflow doesn't do it. Like with the red, though- it seems the tube has the capacity when I turn up the brightness, just not the signal. Once it's warm though, dead on color-wise and stays that way. Seems like I'd have uneven color- it's 0% then on like it never was missing it.
Yeah, the PCB seems quite reliable for the moment. My Gravitar, however, still gives me score/fuel in hexadecimal at times. quite strange.
Probably some maths chip.. these manuals are incredibly detailed. More like some study book for a EE degree than a games manual.
In the meantime, I spent the weekend and over $50 replacing 2 different brand internet routers that lasted a year apiece. This is progress?