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Old 11th Feb 2019, 11:15 am   #1
1100 man
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Location: Ventnor, Isle of Wight, & Great Dunmow, Essex, UK.
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Default Types of CRT used in colour TV's.

Split from this thread:-

https://www.vintage-radio.net/forum/...d.php?t=152139




Quote:
Originally Posted by InsertNameHere View Post
Wouldn’t it be okay though if i were to mark the pots and then adjust the yoke as the set is self convergence as it’s a PIL set.
HI Aaron,

PIL tubes rely (apart from the design of the tube) on the accurate positioning of the scan coils to achieve good convergence. During manufacture the scan coils (yoke assembly) are positioned using rubber wedges glued in place. Replacement tubes came with scan coils already mounted to the tube neck.

I did notice a very slight tilt to the picture in one of your early pictures, but it was very slight and within the tolerance I would expect.
I would advise leaving it alone (although it would annoy me too!). You will probably find the scan coil assembly well and truly stuck to the tube neck so you wont be able to rotate it anyway.

I'm very impressed with the picture quality- the tube looks in excellent condition!

All the best
Nick
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