Watch random images and "Panda" slogans alternated phenomena: sometimes normal viewing hours, sometimes minutes; in the event of "Panda" advertising clause, the images can sometimes back, sometimes changing channels or hit the fuselage, the image will appear.

Overhaul in response to the "Panda" when advertised, has very little sound in the loudspeaker. To distinguish this sound is the FM radio signal of the TV sound is connected in series, disconnect the original volume control, use the manual adjustment, sure enough there has been clear TV sound, then change channels test, when the advertisement appears when sound is still normal. Analysis is the CPU does not receive a signal, but that no TV signal and squelch, and sends out advance solidified inside the CPU's slogan of "Panda". Thus check the synchronization signal feedback circuit (such as photos), and finally identify C810 (1 μg F/50V) fails, after changing the machine returns to normal.