Check carefully, and found no oil leakage. Boot up with tweezers touch power amplifier block IC601 signal input {7}, {11} feet, trumpet sound, prove power amplifier. Touch the output end of the audio processing box MS01 {20}, {} 22 feet, trumpet sound, and touch input {10}, {12} feet, silent, apparently at MS01 problem. Measuring MS01 21} {+ 9 v, {13} feet + 5 v working voltage are normal. So doubt audio processing box MS01 internal fault. In order to further validation, VCD machine connected to the test, found in AV state not only silent, and no pictures. Looks like a TV/AV conversion circuit malfunction. What caused the two out of order at the same time? Suddenly thought of the I2C bus control, forgot MS01 SCL, SDA voltage measurement. The SDA end of the measuring MS01 {3} feet to + 4.5 V, normal; SCL end {4} feet is + 0.9 V, is not normal, normal is + 4.5 V. In certain parts of the machine data bus control as shown in figure 2, measuring the SDA end of the CPU {12}} {11 feet feet, SCL end voltage are normal, obviously the problem SCL line during transport. Carefully check printed circuit, found from R914 to IC701} {20 feet, MS01 {4} feet between coated copper wire has a rust, obviously this is the last time after the oil spill, no will sit in a clean, oil corrosion caused by the circuit board. Well this route, troubleshooting.e9Fservice manual download site