Blessings friends of the forum, before explaining the failure of the team I want to tell you that I have no experience in these teams my experience and knowledge is about TV. but I want to learn. When this equipment is connected and powered, only the buttons light up but the display does not turn on does not function, the stk heatsink overheats excessively. I took out the stk and I measured continuity and it has several pins that are in short knowing opinions of many technicians about the stk and because in my country they already discontinued it (stk 411-220e) I think that another amplifier can be adapted, but the problem I try to turn it on without the stk. And it didn't turn on. I ask this team does not turn on without the stk. Could you help me with your advice that is invaluable, I thank you in advance. exgarmm