[Welsh Anorak]

Not to my knowledge. The production window was mercifully short, though it's true some of the CS series did look a bit widescreen because of the cabinet.
The tubes were always good, but of little use as they were good in other TVs unlike the 30AX.
The annoying thing was Sharp made some pretty decent VCRs around this time (the 381 and later) which were little trouble to repair, so a Sharp TV was the obvious choice for customers.
True, the CT200 and 697 series could be a nuisance, but they were typical Seventies sets. You'd have thought reliability and ease of service would have improved twenty years later...