Netgear NeoTV 550 Ultimate HD Media Player ... only lasted 20 months

First, the media player was very good, did everything he should.
Mainly I listen to music in FLAC format
After about 15 months the dilemma began. Individual dropouts in picture and sound and suddenly I could not find music files.
All tried, like other HDMI cable, change the AV receiver and finally the factory setting. The factory setting for the player ran a few days, then it went off again with intermittent sound, distortions in the image and Dateinen were not found again.

Unfortunately, I did not order directly from Amazon, because the seller does not respond to e-mails and telephone.