skywallker

hello, this is my first post. please help me with my problem. My signal set worked perfectly yesterday, and today, I have noticed that the switch is not giving a power to the rail, when the green light is lightning. I TESTED THE CONNECTIONS FROM THE END - FROM THE POWER RAIL, THROUGH THE WIRES AND CONNECTIONS AND IT TURNS OUT THAT THE SIGNAL DOES NOT GO OUT FROM THE SWITCH :( CAN I DISMOUNT THE SWITCH CASE WITHOUT BREAKING IT AND CHANGE SOME PART INSIDE? is there any electrical part or just mechanical switches (on-off)? the light works well, both red and green. It is just the train does not go on the green. PLEASE HELP thanks in advance ! regards to all forum users !