Electricity of commissioning for automatic search, found a H frequency table all have no, spectrum estimation problem should be out in the H power supply circuit or high frequency head. When will buy H frequency spectrum measured without power supply, high-frequency head of BH end along the line inspection, found that the frequency switching manifold blocks AN5071 to high-frequency head BH between lines have breakpoints, as BH spectrum power filter capacitor leakage, the double panel via impassability, it is better to replace the capacitor is connected by wire hole, troubleshooting.Vj4service manual download site