Hello WelcomeThanks for using JustAnswerThese sets suffer from bad elco capacitors on the powerboard they either leak/balloon up/have raised domed tops., they will need replacing if any are found during a visual inspection of the powerboard,so an ability to utilise a soldering iron is required, if I provide more info on this do you think you can carry out this work?
One more question. I have removed the board & see the capacitors. Is it correct that there should be 3 close together on the board, all of equal size/shape. And also, could you give me a quick how to as far as desoldering the old & replacing the new.