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In Reply to: RE: CD Errors posted by Daveslater on April 01, 2021 at 23:47:55
True enough, Dave. The laser mechanism may be to be addressed somehow.
But the curious thing is that these error occur fairly reliably with certain disks, and not at all with others.
More puzzling is that sometimes, the discs actually do play in the No. 39.
I have two other players, an SCD-1 and an Oppo UDP 205, and neither of these seems to have trouble with the "problem" disks.
Follow Ups:
'neither of these seems to have trouble with the "problem" disks'
probably because they're only 'somewhat' problem discs
you mentioned an upsampling upgrade on a 25 year old player?
I'm betting a bad laser mated to older upsampling read ahead error correction farts, I mean firmware, are at the heart of the problem ...
addressing the laser reading mechanism should be your best and cheapest bet
I say this from past reading on various forums describing the experience you're having
good luck!
I have had similar problems in the past with what was a fairly new CD player at the time so it isn't just the laser power although that adds to the problem over time. The answer is that it is a combination of laser alignment, received signal output level and disc reflectance/errors which is why specific discs may cause problems and others don't. If the TOC can't be read properly, then the disc is rejected. The fact that the discs are sometimes read and sometimes rejected suggests that the reflected signal level is marginal. A new laser (which is basically the whole optical assembly) would likely solve the problem - it certainly did for me in my Sony Discman. Laser assemblies are fairly inexpensive to buy.
Regards Anthony
"Beauty is Truth, Truth Beauty.." Keats
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