Hello Everyone, I am in the middle of renovating my father-in-laws Beomaster 4400 type 2417 for my Wife as a memory of her dad, who passed away. When I dismantled the unit I noticed a disconnected blue wire that joins the left switch pcb to the right pcb but cannot work out which point it should be soldered to.  The only pictures I have been able to find are of the model 2419 and the wire connection patterns are different. I have attached some pictures in the hope that someone can assist. Thanks, Brian