nsykes, there is uncertainty as to whether or not there should be a live buffer when the HR34 is turned off. Some people say they intermittently have one which proves there should be one. Others who have never seen a live buffer on their HR34 are not so sure.
I am wondering if I have a setting wrong. When we go to sleep at night we place the HR34 on local PBS with the intention of watching kids shows in the morning and being able to rewind as soon as we power up. In the past I would always have the live buffer and was able to rewind roughly 2 hours.
Now I have no live buffer every morning.
Until the matter is definitively resolved, the work-around that RACJ2 gave you is the best bet.