Hi - I have a home sound system that was installed around 2015. I have external speakers connected to Soundtouch through the SA-5 amplifier which has worked well syncing with the internal TV lifestyle system. Over the weekend the SA-5 appears to have had an issue and I can't get any sign of life - I think the system isn't accepting power albeit hard to know with only one light. Appears this unit is discontinued and online advice is sparse so hoping this community could help..... I'm in Adelaide, Australia and looking either to understand whether it is worth repairing this or more likely what is the new amplifier I can substitute into my system to engage the external speakers again....