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ctc5 working with chassis outside
Today I have soldered an octal connection for the deflection yokes to operate the chassis outside the set (see photo). I tried to adjust the horizontal output current by turning the core inside the horizontal tuning coil (horizontal linearity). But I can't turn the core, it sticks. How can I loosen the core without destoying the coil? Here by us we do that with a special oil which is a mixture of oil and some kind of acid. But is this the right way for fixing such vintage devices?
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