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 Post subject: [LD-S9] Problems during playback
PostPosted: 07 Sep 2022, 07:45 
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Hey everyone,

I've got a small problem with my LD-S9 but am not sure what's the cause. Since I bought the unit it worked just fine for many years without ever acting up. I had to clean the grip ring a while ago because it got dirty and discs started slipping a little. While doing that I also cleaned and applied new grease to the guide rails for the laser pickup and cleaned the inside as well. So far so good.

Now I felt like watching the entire Fawlty Towers box set again - after not having used the player for about three months - but whenever I play a disc the unit starts to "act up" a little. Both picture and sound start to get blurry/distorted and there are drop outs for a couple of seconds, then everything returns back to normal. I can also hear that the spindle motor appears to slow down a little during those dropouts. It only happens during the first 2 to 3 minutes after starting playback, and then everything works just fine. And only on side A, too. When the pickup flips to side B playback its flawless. The best thing is: whenever I start playback on side A again after watching side B things look much better. Most times without any dropouts, every now and then just for about two or three seconds at most. Like this: I play disc 3 of the FT set > playback starts with chapter 8 > dropouts appear > I move forward to chapter 9 > playback ok > pickup switches to side B / chapter 10 > playback ok > disc stops, pickup returns to start position > I start playback of chapter 8 again > playback ok.

MY LD-S9 was build in 2001, so yeah, it's old. Maybe something's worn out? Capacitator gone bad? A focus lens/pickup problem? Maybe I should turn it on an hour or two before playing any discs so electronics can "warm up"?


Last edited by knatterbuechse on 08 Sep 2022, 07:18, edited 1 time in total. _________________
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 Post subject: Re: [LD-S9] Problems during playback
PostPosted: 07 Sep 2022, 16:39 
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Sounds like you could have left a film on the laser, be careful when cleaning as some lasers have a coating.
But I can't remember which ones.

Also could be that grip ring, it could be slipping at the beginning and when it gets going it will give enough friction to catch??
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 Post subject: Re: [LD-S9] Problems during playback
PostPosted: 07 Sep 2022, 20:39 
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Hey Rein-O,

opened the player to take a closer look, the laser is super clean. No dirt, no nothing. But when I tried playing another disc later on a "P0" error appeared on the display - the disc failed to speed up all the way like it should. So yeah, I suppose you're right about the grip ring. I had to clean it twice already because discs tended to slip so it probably dried out due to aging. After all it's just rubber - doesn't last forever. Guess I need to get one of those new grip rings I saw on eBay and replace the old one, hoping that it'll solve my problem (I most certainly hope so because I love watching LDs using this very unit!).
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 Post subject: Re: [LD-S9] Problems during playback
PostPosted: 07 Sep 2022, 20:45 
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Yeah I had to replace a grip ring once, they are stupid thin and I'm surprised they last as long as they do.

I hope that's the issue and you get that player up and running again.
I had a dirty laser on my LDS1 and love using that player but it wouldn't play until I opened and cleaned and luckily it was that simple.
My other player is having an issue flipping but I haven't had time to see what it may be, but again I hope its easy.
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 Post subject: Re: [LD-S9] Problems during playback
PostPosted: 08 Sep 2022, 07:26 
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Just ordered a new grip ring from Fireproof! Hope it'll arrive within the next couple of days so I can replace the old one and give it another try.

Regarding dirty lasers I did have a similar problem with my CLD-2950 a while ago. Refused to play any discs so I opened it up to take a closer look. The lens was really dirty and it took me a while to get it clean again...
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 Post subject: Re: [LD-S9] Problems during playback
PostPosted: 22 Sep 2022, 15:13 
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Got my new grip ring yesterday. Replacing it was much easier than I thought and everything worked out really well. Did a test run using two movies I recently bought. During playback of the first disc I still had the same problem coming up during the first 3 minutes, after that everything was fine. And the second disc played fine from start to finish without any issues. Plus overall picture quality was much better than before, so replacing the ring definitely helped. Suppose I have to play a few more discs during the next couple of days to see how the player behaves...

Is it possible that there might be a problem with motor speed control? Because the problem only seems to occur when the disc spins at top speed. But then again the problem should repeat itself on side B, which it doesn't. Judging from the spindle motor noise I could hear during playback of the first disc it appeared to have slowed down irregularly a couple of times during the first 3 minutes. Kinda weird...
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 Post subject: Re: [LD-S9] Problems during playback
PostPosted: 22 Sep 2022, 16:06 
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Sorry I'm too lazy to search it up.
Does fireproof make them or sell pioneer stuff??
If either there may be a light dust on the rubber that came off after the first play, sometimes rubber depending on where you get it
has a film or light dust that needs a wipe with something like a windex.

I think its due to the manufacturing of the rubber itself, maybe a mold release when its rolled/poured or however they would make
that specific thinness.
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 Post subject: Re: [LD-S9] Problems during playback
PostPosted: 22 Sep 2022, 16:13 
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Just for the record, fireproof makes them; his website: https://www.laserparts.net/
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 Post subject: Re: [LD-S9] Problems during playback
PostPosted: 22 Sep 2022, 23:01 
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Yep, the grip ring I got from LaserParts is made from a different kind of material than the original Pioneer ring. But it works really well!

I just did another test run using the Criterion RoboCop CAV discs and playback was fine from start to finish. However the problem playing CLV discs remains, but only on side A and only during the first couple of minutes. Did some research and judging from what I found so far the problem may have something to do with the focus of the laser lens and/or alignment. In an old post I found on Google groups kbahr wrote:

The problem that you are having is due to the focus of the laser lens matching the height or distance between the LD and laser pickup. With older units you could adjust the focus and correct this. ...
The problem can also be with CLV discs if you get one made bad enough. When the discs are made they are specified to have a specific depth that the information (actually pits that produce an FM signal) are to be impressed at. If this varies from the optimal position the strength of the recovered signal will vary and may go below the required level to track properly. This can be corrected in the field on the industrial players but not the Consumer versions like yours. It will be hard to find any repair shops that spend enough time with equipment to learn about this problem or how to properly correct it.


So either the laser lens focus doesn't work properly anymore or is out of alignment. Even if I could get another laser pickup (are there still pickups available anywhere?) it has to be installed and aligned using the right kind of equipment. Not sure if I can find a repair shop being able to deal with this problem. So maybe I just use the S9 for CAV discs only from now on and watch my CLV stuff using the CLD-2950. But some day the S9 will probably stop working altogether...
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