Help with Amp Mono - Line In

Hey there!

When i use the Line In 2 connector (JST PH 2.0) the Green Line In LED keeps blinking.
Since i wanna put the amp into the speaker i cant use the 3.5mm Jack on the board.

Is there any fix?

You can short the 2 PINs of AUX interface (3 Pins in the other side) to simulate always plugged. Or just insert a 3.5mm plug.