I need part # 8-598-414-20, can't find anywhere need help

If you are sure the tuner--which is what this part number is bad, there are several places where you can get it rebuilt cheap--First is Pts Electronics, If you Google sony and the part number you will also find.

http://www.tiptoptuner.com/#SONY

This is just an example that I found...Most of these tuners when available were expensive---best bet is to get it repaired/rebuilt

Let me know if you have questions--I am here to help.

If this information helps rate this solution as I do this here for free.

Thanks for using Fixya!

SD TECH