Check again on pin 8. IC1
Please be more careful.
yeah it is ok, Its high.
BUT IC23 uPD4990A , the DATA OUT pin (Pin 10) is unstable in non working board, where in working board it is constant 4.8V. I checked all the CLK, INPUTS and all are same to the working board, why is DATA OUT is not acting as it should be.
Another is IC53 74HC/HCT374, the Q0 pin (Pin 2) is low in non working board, where it is high in working board. The other are same in both working and noin working one.
Why both ICs output is weird, even when clk input and as well as enable pins are acting fine?