Greetings from FixitLand!
Quote:
Originally Posted by RitchieMars
What do you guys know about the interchangeability of CRT's? The one in my television was originally a 17LP4 and/or 17VP4. Are there any other compatible 17-inch CRT's that might interchange? If so, I'll have to keep a look-out for those also. So far, I've read about a couple different variations made during this period that are very similar to the 17LP4. The main difference I've noticed is that my CRT is uses an electrostatic focus, and many of the other types are magnetic. However, the 17RP4/17HP4 has nearly identical specifications to the 17LP4, and also uses an electrostatic focus.
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The 17LP4 and 17VP4 have a cylindrical faceplate; that is, it curves from left to right (which you can see looking straight down its face) but vertically it is flat (which you can see looking across its face). (Sony Trinitrons were made the same way.) The 17HP4/17RP4 faceplate apparently curves both horizontally and vertically, as most tubes of that era do. So, electrically it may be quite similar, and actually work, but mechanically it will probably not fit the TV's picture mask properly.
My 1952 Zenith K1846R also uses a 17LP4 tube. So did my first set, a '53 Motorola TV-radio-phono unit.
Take care,
--
J. E. Knox 'The Victor Freak'