When you repair this fault, and clock memory chip should be the key point. Clock memory circuits generally constituted by a special chip (CPU), on memory chip clock working voltage, oscillations of Crystal, check the bus voltage.

Check the 5V supply voltage PCF85638 feet; 1 foot 2 feet between the G100 (32. 768KHz) crystals; and TDA93832 between 5, 6 feet, 3 feet between the I2C-bus voltage.