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Originally Posted by Phil Nelson
Remove the channel selector knob. If you're lucky, you'll see a circular set of holes in the front of the tuner body. Using a strong flashlight, look inside and you'll see that for the current channel, the adjuster screw is exposed, deep inside.
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Phil, not to be picayunish
but the circular set of holes applies to a wafer type tuner wherein all the adjuster screws are exposed, not just the one for the current channel.
By contrast, a turret tuner has just one adjustment hole so that changing to the next channel exposes only that channel's adjuster.
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Turning the screw with a l-o-n-g skinny screwdriver should allow you to center the tuning for that channel.
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Ideally that should be done with a non-conductive screwdriver; back in the day there as a long skinny fiberglass tool for this purpose.
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Note: I don't know if it's true for this set, but for some TVs you're supposed to adjust the oscillators in a definite order, for example, starting at channel 13 and working down to 2. I adjusted all of my channels in 13-2 order.
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That was true of wafer tuners, not turret type.