redump.info Forum

bikerspade wrote:with a PX-716UF and it threw many unrecoverable C2 errors

as far as I know there was at least one batch of PX-716, especially those used in USB enclosures, that had some issue with the laser on CDs and eventually they stop reading CDs altogether even after very light use. also, at the end of the post here:

/viewtopic.php?p=74017#p74017

I documented how PX-5224 that was reporting hundreds of C2 errors on the same discs after some more hours of use started to work, i.e. probably the laser "wake up" from the use instead die.

scsi_wuzzy wrote:I hope for that reason alone we can get all the kinks worked out with the ASUS / LG drives. They seem to be better readers. That might just be because they're less aged and worn, but I suspect it's also just because they're newer technology.

There's another critical reason to use those drives: they're still being sold!
Finding a Plextor is getting more difficult by the day. The ones you can find on ebay cost a kidney and there's no guarantee they're in good condition. My 760A is useless now (Servo failure with all discs) and both my Premium and 708A are only reliable with slow speeds.

ssjkakaroto wrote:... and there's no guarantee they're in good condition. My 760A is useless now (Servo failure with all discs) and both my Premium and 708A are only reliable with slow speeds.

totally agree, as newbie here, recently I bought 708A, 712A and 716A : all of them are with dead laser in different stages, i.e. 708A and 712A the laser is completely dead (it cannot read neither CD, nor DVD, actually 712A was able only once to read one particular CD, but obviously the laser is very very weak) and 716A cannot read CDs, still good for DVDs (but that's more or less useless).

However, at least for 708A and 712A there are replacement lasers available from China - in 1 month or so I will be be able to give feedback and tell if the replacement laser is as good as original, i.e. if they can read my favorite test CDs - those with Cactus protection, i.e. many C1/C2 errors pressed at factory.

So, bottom line, I wouldn't recommend buying 716A at all - as there are no replacement lasers for them. Currently, BW-16D1HT beats PX755/760 in most cases, because of the aforementioned in previous posts firmware bug. So, I guess, only safe bet are 708A and 712A, but if you're willing to replace the laser plus for me it is still an open question if the replacement laser is as good as the original. I ordered mine, but shipping from China takes forever...

Also, Plextor PX-5224 I bought has a fault:

/viewtopic.php?p=73963#p73963

luckily I found way to workaround its fault, but not how to fix it. So, at least for me, so far it turned it's kind of impossible to find second hand Plextor that in 2021 is actually still in fully working order.

@bikerspade
If you have time, continue to dump your +1176 disc by ASUS until the hash unmatches, and upload the unmatched logs, plz.

sarami wrote:@bikerspade
If you have time, continue to dump your +1176 disc by ASUS until the hash unmatches, and upload the unmatched logs, plz.

No problem, I will do that and report back.

I’ve run it 30 times so far, and no bad dump yet. I had a batch file running it consecutively with 60 seconds to cool down between iterations. I don't think it's going to give me a bad dump at this point.

bikerspade wrote:I’ve run it 30 times so far,

Thanks. If data-shifted is really random, it will occur someday... btw, what drive and os do you use? Jackal reported that it occurred by ASUS (What ASUS?) and linux (What distribution?) /viewtopic.php?p=26178#p26178

sarami wrote:btw, what drive and os do you use?

ASUS BW-16D1HT
90DD0200-B28000
Manufactured April 2021
Firmware v3.02
OS: Windows 7 Home Premium

bikerspade wrote:ASUS BW-16D1HT
90DD0200-B28000
Manufactured April 2021
Firmware v3.02

Tell me the drive name and firmware before a flash, plz.

sarami wrote:Tell me the drive name and firmware before a flash, plz.

The drive originally came with firmware v3.10.
Drive name? It is a BW-16D1HT/BLK/G/AS