RND4PSU1-10000S availability

My Readynas NV+ just started experiencing problems. I shut it down a week ago, as I prepared to be out of town. When trying to bring it back up today, it wouldn't. The lights above the disk icons and "act" flickered briefly as I pushed the power button, with no other activity. I retried several times, unplugging between tries and found that intermittently I would hear the fan make brief noise then go silent and I'd see the display light up, sometimes blank and sometimes with the "Welcome to Readnas World" message. For both these, it would freeze in this state i.e. screen lit or with message. I tried it several times with the disks removed too. Here, I intermittently got different results. Sometimes just the lights flickered as above but then with other tries it seemed to start up and display a message that it was booting and then finally display a message that no disks were present. For this last case, it was discoverable by RAIDar.

Mine is V1 purchased 8/2007, and within the range of serial numbers with PSU issues. Does this sound like a PSU issue? Are replacement PSU presently available from Netgear or elsewhere in USA?