Let me give a little advice about 'media'. I have two Panasonic DVD recorders in use, beside the Samsung that I recently bought.
I had DVD-R and DVD-RAM disc, from different manufacturers on hand. The Maxell DVD-R's, which worked perfect in the Panasonic, would lock up in less than 10 seconds in the Samsung. Picture would freeze up on the TV, recorder got VERY noisy. The RAM's worked OK. Glad I didn't try another brand of DVD-R,s. ...instead I went to Wal-Mart and got a spindle of Maxell DVD-RW (15 for $12.99). They are great. No problems. After you insert one, you initialize it, then you can go to disc manager and format it as a DVD-VR (re-recordable) or as a DVD-V . If you choose DVD-V, then finalize it after recording it'll play in most DVD players sold . Maybe if your having problems with the disc your using, these may solve your problem. I feel fortunate, I got something that worked so good the first time.