Part number: LA-E791P Problem: adapter lagate hi DC shorting dikha raha hai,Shorting Problem

Part number: LA-E791P Problem: adapter lagate hi DC shorting dikha raha hai, charging light off ho taha hai, dc ka cc light blink ho raha hai. And step-down ic heat ho raha hai. Pahele laga tha 19v short hai. Step: step down ka input jumper remove kiya. 19v ban giya. Jumper lagaya, Input capasitor replace kiya not solved. 3v ldo and both 3v, 5v output jumper remove kiya. Ldo ban giya ic heat nehi ho raha raha tha. Ldo ka jumper lagaya no issues. 5v output ka jumper lagaya no issues. 3v ka output jumper short kiya to problem aaya. Aab situation aise hai ki 3v_alw bahat jaga pe ja raha hai, Schematic dekha to mujhe laga pahele rtc vcc ka supply dekhta hu. Rtc diode ko remove kiya to Amp. Proper ban giya and charging light ban giya. Diode remove karke short kar raha hu to same issue. Rtcvcc k path pe ek capasitor hai jo cpu k niche hai usko trace kiya and remove kiya problem solved within 30 minutes.