good morning, I get monoblock amplifier for subwoofer that uses 4 mosfet irfp250n output that are good, it takes 2) ir2111 and 1) lm2574hvn-15. the stage that receives the signal is good because sound comes in and out and has its + 15v and -15v power supply, I need help if someone can give me directions I would appreciate it

good morning jomi I tell you the diagram was vital because measuring vs. detect total absence of v on pin 7 of lm2574hvn-15 which turns out to be a 15v + va reducer; try to get it used, new or even try to get it imported but I did not get it this time, it occurred to me to adapt a 15v source with the 7815 connect between pin 3- and pin7 + eliminating the lm25 ... note: the relay if activated and there was v in the mosfet, audio signal arrived at the ir2111 card, these are powered by pin 7 of the lm25 ... the amplifier is good thanks.