My seat mower Alko T1000 has a problem and that was when the mower was mowing at once the mower went out of me so still driven to the garage engine turned off to see what was with the mower. Nix found. So I wanted to start the engine again but nothing goes. The starter doesn’t even turn at the key. I then typer cable to the built-in battery on it + cable directly at the starter and the trecker runs. So it can’t be the seat switch, because when it worked I got the seat up and it went off. Brake switch should also be healthy because when the engine ran brake loosened seat off high trecker. Brake determined seat high engine remains on. What else can it be. Mower can not be switched on after bridged motor start. Thanks already for the help.