It is about a Sony amp unit of mini hifi from 90s the chip was blown away for 2nd time in 7years that someone else change it for me I purchase a new one i almost blown the pcb with the heat gun and I maybe blow the new one but all this was suggestions because the problem with the whole thing was still the same as before I change the chip I open the thing and the rear fan was run in hi rpm and then I close it
note that I haven't have any technician skills except from the basics any suggestions?
Thx for your time
Thx for your time