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Old 29th November 2002, 02:19 AM   #1
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Default Cd player beginning to skip.... :(

I really need some help here. I have a really nice sony CDP-CE305
cd player and it has excellent sound considering that it's just a consumer unit. When I first obtained the player (used), it worked very very well, it would even read badly scratched cd's with ease and you'd barely hear a slight ticking sound when the scratch went by.

After about a year, the cd player is now beginning to skip on almost every cd I put in there unless they are perfectly clean and very well recorded.

Can anybody help me with some procedures to get this thing in tune again? I think perhaps that the optics under the lens need cleaning, but if that's not the case, maybe it needs adjustment.

Any help is greatly appreciated... Thanks...
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Old 29th November 2002, 02:22 AM   #2
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have you tried to clean it? Always a good place to start.
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Old 29th November 2002, 02:31 AM   #3
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I cleaned the top of the lens but not under it at all. Cleaning the top made a pretty good difference, but I think it might be dirty underneath where the mirror and pickup are.
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Old 29th November 2002, 09:26 AM   #4
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Hi,

Solid state lasers in CD players wear out. After some years the light output will drop and the EFM level (the analog signal read from the CD) and tracking signals can become too low. That causes often the skipping. On the Sony’s there is a little potentiometer on the laser head to adjust the laser level. But unless you are familiar and experienced, stay away from it. One tenth of a mm too far with this pot and you laser goes to walhalla. Anyway you need a scope to watch the EFM level. But it can be done. My old Sony served me 4 years further after such an adjustment.
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Old 29th November 2002, 10:51 AM   #5
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I have had weak laser problems but it took a couple of years, 12 to be exact. My oldest CD is from 1986 and still going strong.

My laser problem resulted in trouble to get CD going at all. Now the laser is turned up to max but I have still problems now and then.
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Old 29th November 2002, 12:07 PM   #6
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Pjotr,

There's a dutch saying (translation) : exceptions confirm the rule.
Most lasers that are "turned up" don't last long. If the factory adjusted current was in fact maladjusted ( too low current ) you are lucky and turning it up doesn't result in a "burn out" of the laser.

I like this one:
Quote:
One tenth of a mm too far with this pot and you laser goes to walhalla
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Old 29th November 2002, 12:13 PM   #7
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I don;t think "over tuning" will wreck the laser, I did it to my portable player to see if I could get it to read re-writable disks.. ALMOST!!!! ohh well.. it still works.. If I turned it too far, it would get distorted.. I have done the same to a friends Cdplayer that was getting weak.. not sure if its till going... but if it doesn't work properly in the first place, and a repair man is going to charge you like $1000000000000 just to look at it, why not just *TRY* to adjust it yourself???
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Old 29th November 2002, 12:16 PM   #8
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Skinnyboy, please reread Pjotr's previous post.
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Old 29th November 2002, 12:18 PM   #9
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No, wait, I don;t agree with that...
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Old 29th November 2002, 12:23 PM   #10
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Quote:
No, wait, I don;t agree with that...
That's fine with me. We don't have to agree. One of the nice things of a forum, don't you think ?
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