For the port number this may change depending on the configuration or also depending on the USB port of the PC to which you connect (does not matter the number as long as you used in repetier the one you find in the device manager when you plug in the usb between the PC and the printer card)
“Both lights are lighted up (Red and Yellow)”
this is a good sign, because without the power supply, when you plug the USB they should light up. (so +5V and GND are correctly soldered.) but in principle, if you also connect the sector they must switch off. And they should flashed during a data transfer.
So it may be necessary to check the wires, solders and tracks where DATA+ and DATA- are soldered (have you done a continuity check ?)