Attaching the area around TL494. One side drivers burn and burnt the board too. It is soundstream tx2.1500 amp. I cleaned the area and changed TL494 removed all the power fets from board. Switched on the amp to see oscillations. Found no oscillations. Pin 16 is high 3.5v . It is connected to optocoupler and pin3 through diode. I removed the diode and optocoupler still getting 3v on pin16. And pin 3 is 3.5v. Getting oscillations but duty cycle is far different from normal oscillations.
