hifi engine

Help with a Yamaha cr1040

Hi I own the cr1040 recently it has begun having issues basically the right channel speakers will only work if running them through auxiliary cd player. Also the fm Ots button is not engaging as it sits now I have to have it lodged pushed in for it to work or system goes quiet.anyone have any input about how to fix theverything issues I'm pretty handy with electronics but I'm no guru is this something I could fix I've read parts are hard to find for this model as well. In advice would help yhanks.