Analysis and Maintenance: User introduction, lightning has been shut down, and unplug it, but then the boot that dull thunder past silent. Prove that lightning is caused by damage to induction into the TV, the test machine is indeed light, but at the moment it appears instantly shutdown grating, description line, field oscillation circuit is normal, the fault in the CRT video amplifier circuit and peripheral circuits. After examination, the three video amplifier tubes are cut, an increase in acceleration voltage, appear to have light shed retrace line, determine fault in decoding and luminance signal processing circuit, focus on examination of decoding, scanning small letter processing integrated circuit IC601 (AN5192K) measured 14,23,47 pin power supply voltage 9V, 5V normal, and the luminance signal pin external components are no exception relating to estimated IC601 was damaged by lightning is a strong electric field, the image appears after replacing IC601, accelerated repatriation after the voltage troubleshooting.Cwaservice manual download site