Recently, I purchased a Z-match antenna (purchased from "x宇之星" on Taobao, patch resistor type), and while using it with a 10W FT8 rig, I accidentally damaged the tuning capacitor, which prevented me from tuning below 14MHz. After having the capacitor replaced through surgery, I retested it, but found that both the BNC connection point of the antenna to the tuning capacitor and the thin-film capacitor itself were conducting (completely grounded). I have checked all components, including the coil, but haven't been able to find the cause of the conductivity. I would appreciate help from experienced users in diagnosing this problem.
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