I have used a Plextor 760 burner for about 2 months (I bought it on March 10) and I burned about 100 DVDs since, mainly Tayo Yuden T03, with very good results (measured with Kprobe2 on my Lite-On 20A1H).
Suddenly to-day, the PX760 burned a DVD at 0,5X (16X asked for) 1,5 hour ! with very bad results : 12000 PIF with plenty of 5 Pifs bunches. I usualy get less than 500 PIF with no pif bunch over 2.
I first thought it was a bad DVD, but it was the same with several others. I then burned the same file with the LiteOn, and the result was normal (though a little less good then PX760) 16X burn with 537 Pifs, and no block with more than 3 pifs.
Should I send the PX760 directly back under warranty, or could it be something not too bad and what tests are suggested to find out what is wrong ?