I need support on the K2649. I just finished it, but the display shows the "-"sign and the leading “1” and the decimal point immediately after power up.
After app. half a minute, the display shows something “0.02”
It does not change with temperature and does not react on calibration or gain potentiometers.
Most likely an assembly problem.
Sorry, this forum does not allow picture uploads
If you can provide LINKS (e.g. by using a free online picture base) to HI-RES and SHARP pics of your assembly (both solder- and component side)
then we can take a look and provide some feedback.