Assume you are using 2 wire 1 shield cable
UCD board side --> RCA
Signal + --> RCA +
Shield cable --RCA -
Signal - -- RCA -
Enable pin -- PSU Enable pin
KK
93067521
[quote:0366d91a7d="icefireman"]First of all, I only have a 40W iron. How much for the 70W iron? And I used sand paper, after that, the problem is fixed.
And there is another problem. Because I try to replay the signal cable (the silver color one which KK helped me to make it, that's why I don't know the construction) in the UCD amp. But I don't know how to wire it because one end had only 2 wires, and the other end had 3 wires. Do you know how to make it, Accphoto? Many Thanks!!![/quote]