Hello, I got a problem with the buttons on my MZ-NH900 unit which did not work any more. Because I live in Vietnam and also because Minidisc is not officialy* supported by Sony Vietnam they accepted to send my unit to Singapour. So I finnaly noticed that they changed also the SCREEN (with the buttons it is the same electronic part) for around 30 euros. Maybe you will pay more in your own country (*) but you can find in Vietnam on the market if you have time to search... - MD japanese bookselves (Victor/JVC, Sony...) for $150 / $220 (no HI-MD bookself, so sorry) - MD / Hi-Md recording units for $150 / $230 (never see a MZ-Rh1, so sorry) - MDs but no Hi-MDs : one 80mn MD is $1,5 ! - the very last gumstick batteries 1,2V 900 / 1400 mA for $7 / $10 - the very very last battery charger for gumstick battery for $10 - charger 3V / 1A for MZ-NH900 unit for $7 I used also a Creative X-Fi Xmod with my MZ-NH900 -------------> the sound is so great !