Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Sony Quality on the Decline

I purchased the first Sony DVD/VCR combo and it worked great, for about 4 weeks. Then half way though a movie it started jumping from scene to scene before it froze up. I tried a couple of different disks but all I get in return are error messages. I received a replacement unit and on this one the DVD player only works on half of the disks I've tried. The other half I get "can't read disk, clean disk, error", etc... These are the same disks that worked fine on my original unit until the crash that is, and they all work fine on my Marantz 6400. I really like the way the Sony 500P interfaced with my Wega TV but it seems like Sony is just interested in selling low quality DVD players