Hi Arthur, what make/model samsung is it? The small older OS100 systems were notorious for the power supply cap's to fail.. easy to replace... when it happens all phones just display Ver.XXX.. since they will have no data. Also, super cap's on the memory card (acts as a CMOS battery) will eventually fail.. causing the system to default on a power outage... again easy fix. Both failures will require reprogramming customer config, as the older systems just operated in ram.. no onboard hard memory.

If it is newer 7xxx series... I believe that KSU's/cards are still available until October... although I haven't attempted to purchase any in months.

Robert
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