Quote:
Originally Posted by joe111671
The yokes have different plugs which I can work out. The SAMS for the CTC108C shows yoke resistance to be 10 ohms on the vertical and 1.4 on the horiz. I measured it and that's what I got.
I don't have a schematic for the CTC118. The vertical on that does measure 10 ohms, but the horiz has a cap in series with it so I can't measure it easily. I don't know the significance of that cap so I hesitate to do the swap & I don't want to disturb the convergence tape by trying to swap yokes.
I really want to try this but don't want to ruin a good chassis or yoke.
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It's not just resistance of the windings, but also the inductance of the yoke windings that must be taken into consideration for a swap.
I think I have the setups for both these chassis for an RCA test jig (or you may be able to find this on line).
If the setup for the two chassis is the same, it would be safe to try. A lot of times the setups for different chassis might have too much width on one, less on another, vertical shrink etc. But if the switch settings are the same, it will work without creating an annoying mushroom cloud on your bench. Any slight differences between the yokes could likely be fudged at the chassis by changing some values.
I'll check tomorrow at work. If you don't hear from me, ping me..
John
03-01-2020, 05:52 PM
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