How to upgrade ZTE No.9 flat pot after August 1 1? (that is, a small pot without an external tuner)

At present, it is best not to dismantle it, although theoretically the copper wire inside will turn in the opposite direction for a while and then 124. But generally speaking, it will be scrapped if it is demolished. Because the array, thickness, length and rotation angle have strict technical requirements. If the signal quality is slightly worse, it is 0, and even the left-handed 16 channel can't be seen. And even if you successfully change 124, you can only receive 30 right-handed programs, and 16 left-handed programs can't be received. I suggest checking your set-top box. First, measure whether the output voltage of left and right rotation is different (about 15V, about 18V). ) If it is not the same, switch to a dual circular polarization tuner to match the pot. If it is also 19V, it can be seen normally without polarization conversion circuit and dual polarization tuner, or the polarizer of the left-hand tuner can be adjusted to 1 point.