I have just dismantled my new A100 as it stopped sending sound to the speaker terminals. You have to carefully remove the side cheeks. They are just glued in and they have a glass insert as I cracked one while praising it off. You then remove the 2 screws at the flaring and the case slides off easily. Nothing much to see in terms of blown capacitors but have to test the transformer. Everything else works perfectly and did until the sound stopped. I doubt if the sound issue is anything to do with the firmware but want to try it anyway but can’t find anywhere to download it. Has anyone out there got a copy they could send me? Thanks, Paul