david_prentice:
Most items arrive in full working order (if sensibly packed).If you don't have a DMM, just replace one jumper wire at a time. Or test each wire with an LED and resistor. e.g. put LED and resistor on breadboard. Test each wire by connecting LED to 5V via your wire.
David.
checked all wires with an external LED, all wires work fine but still no text. any other soultion?
I rewired according to https://www.arduino.cc/en/Tutorial/HelloWorld