According to the fault phenomena analysis, the fault is usually caused by abnormal IIC bus control circuit. Measure the CPU voltage SDA and SCL feet are normal (see chart). Vpnservice manual download site
 Vpnservice manual download site
Enter a state of repair, adjust the IIC bus data can be adjusted to normal, but when stored as "normal" IIC total data and return to normal viewing mode, the fault appear again. Vpnservice manual download site
 Vpnservice manual download site
Back into the maintenance mode found that data has not been stored, try to change a piece of memory (24 c01) more failure remains, but the automatic or manual search programs can be normal storage, this shows that the normal communication between CPU and memory. Get into trouble at the moment. After the test, with the memory of SDA and SCL series resistance R1127 and R1128 short, all function returned to normal, the experimental short R1103 and R1104 are equally effective. I later in the overhaul of panasonic TC - 2950 - r color TV and SONYT25MN color TV also encountered similar part of the data stored properly, are solved in this way.Vpnservice manual download site