|
I dunno. In some 30+ years in the trade, I never once had to sweep align a tuner. Nearest thing to alignment was setting the LO to the proper channel numbers.
Once in a while, a minor tweak of the mixer plate coil was needed to improve the color passband. The CTC-4's tuner doesn't have a mixer plate coil in the usual sense, though.
A by-the-book tuner sweep alignment would be 'waay overkill unless somebody has twerked with adjustments other than the LO.
You mentioned something to the effect of "being blind and deaf to actual video". Does this mean that with the color control fully off, the display shows no luma (BW video) signal? (With color fully off, normal BW video should still be there.)
|