Recording turns off by itself

SanDisk MP3 players Sansa® Clip | Sansa® Clip+
1

I have a Sansa Clip+ 4GB and like it very much.  It plays very well and when it records it records superbly.

However, when I want to record a class, I start it recording, lay it upside down so that the microphone is pointing to the sound source.

I come back later, and find the whole player turned of, and when I go to play the recording, it is only a few minutes long, while the class was an hour long.

Am I doing something wrong?

2

Do you have the Sleep option turned on, so it will shut off after a certain period of time?

Do you have enough free space (internal memory) to record for the full hour? These things record in WAV format so they do use up a lot of memory space for recording.

3

You are exactly correct!  There was no room for the recording.  You hit the nail on the head.

Sorry it took me so long to reply.  My Sansa Clip + was indeed full.  It took a while to make room.  I bought  a micro SD card (on black Friday) and moved most there.  With about 3 GB free, I made an hour and half recording.  

Thank you very much!