Quote:
Originally Posted by Electronic M
Keep in mind that color tubes can't be rephosphored (I doubt anyone even did that back in the day). The complexity of dismantling the screen from the bell (without damaging the shadow mask), reapplying a grid of VERY tiny and precise phosphor dots, realigning/attaching the shadow mask and reassembling the whole thing would be prohibitive.
|
You are right, no-one could re-phosphor color tubes. Each tube/yoke type needed a matching light-house optics to expose the photo resist for depositing the dots. Plus, I seem to recall something about the negative guard band tubes being exposed and phosphored while the mask still had small holes, which were later enlarged before final assembly. Anybody know about that for sure, or am I dreaming?