[QUOTE=negritude;2308984]1. Make sure the drives are set to master when installed in the enclosure. [/QUOTE]
It is set to master.
[QUOTE=negritude;2308984]2. Make sure the drives have the latest firmware, which for the PX-760A is 1.07: [/QUOTE]
Yep, already flashed to 1.07.
[QUOTE=negritude;2308984]3. Run the program PX-Info, so we can see just how used these drives are: [/QUOTE]
Apparently it doesn’t display times when used in external enclosure, as I tried this too.
[QUOTE=negritude;2308984]4. Please verify for me whether the chipset used in the bridge of the enclosure is made by Cypress Semiconductor. Use a dignostic tool or open the enclosure up and look for a chip that has the letters “CY” and some other numbers following it. There is a known problem with many Cypress-based bridges where the DMA was not set properly at the factory, and you need to modify the chip to fix it and allow for full speed DVD burning. Here is the relevant thread in the External Enclosures forum:[/QUOTE]
What diagnostic tool can I use?
[QUOTE=negritude;2308984]5. Basing your evaluation of the PX-760A on a couple of used drives from eBay is faulty logic of the highest order. Unless you are an expert at spotting good used drives, you could have gotten completely shafted and taken for a ride, and it would have absolutely nothing to do with the quality of the PX-760A, but rather, would simply be a statement on the fact that you didn’t know what you were doing. You have to be very careful when buying used drives, especially on eBay, and in regards to Plextor drives especially, there are all sorts of things you need to evaluate beforehand, long before you make a purchase or bid on an auction. We have no idea if you did any of that, so your comments about the PX-760A have no relation to reality.[/QUOTE]
I have been a Plextor customer since the old 4-Plex, have at least 3) 6-Plex drives still, several other assorted Plextor SCSI drives and every burner I have bought to date has been a Plextor, so I believe I know what I am doing in regards to Plextor drives.
You’re right in that my disappointment may be that I got bad drives, or perhaps due to the enclosure used. But, the same enclosure works flawlessly with the used Plextor Premium I got last week, and I expect it will work fine with the second one being delivered tomorrow.
I plan to put the drives into my desktop over the weekend plugged in internally, so I can pull more information and do further testing with them before I pass final judgement. At this time I would have to say that I am happier with my 716A drive than with the 760A. Just my opinion, which may be premature, but still a valid observation.