Hello . i ve got a demaged dcmd77n circuit and i want a buy a new one or repair the one thet i ve got can you halp me about this problem or suguest any page where i can find it. It works but when i push the start button it gives an error and it doesn t starts the engine morotr . it doesnt give trigger to the basse of the power transsitor. what can we do in this casse . waitin for your answer