[Jeffhs]

For ctc17:

Wow! I had no idea the high voltage played such an important and vital role in the operation of CRT-based color TVs. For example, I knew that the horizontal sync is extremely critical in color TV; if the hold control is off by even a hair's breadth it can kill the color in no time flat, even though the monochrome picture will not be affected. However, I did not know about all the other problems low or no HV can cause in a CRT-based color set. No high voltage will kill the raster; that much I knew, but all the other things you mentioned that can go haywire in an older color set when the HV acts up are nothing short of amazing, to me anyhow.