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streder
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Post subject: [LD-S1] Troubleshooting updated with videos! Posted: 07 Feb 2017, 03:28 |
Third post and above |
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Joined: 07 Feb 2017, 03:18 Posts: 5 Location: United States Has thanked: 0 time Been thanked: 0 time
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Hi all! New here, but found this forum while Googling solutions for a problem with my Pioneer LD-S1 player.
I have owned this player forever, but for the past several years it sat in a closet while we built a new house. I recently hooked it up again, but can't get it to play anything. It will open for me to load the disc, then it closes, the disc set light comes on and the standard play light starts flashing, but right when I would expect the whirring to start up, instead I hear a very faint grinding sound, and a few seconds later it ejects the disc. I removed the top cover/bonnet, and the disc definitely is not spinning prior to ejecting again.
However, if I shut off the player after loading the disc, and then turn it on with the disc already in it, it DOES initially start to spin, but there is a faint scratching sound, like the disc is brushing on something, and then the disc slowly stops rotating. I imagine that this is some sort of safety mechanism-- that the spindle will stop turning if it senses any friction-- but I am not sure why it does this only when powered up with the disc already loaded, but won't even try to rotate the disc in the other loading scenario.
Do these sound like the same problem, or two separate problems? Does it sound more like an issue with the spindle, or the disc tray? It occurred to me that maybe the alignment is off or something with the disc tray, such that when I load it from the outside and shut it, the player senses that and won't even try to spin, but when I turn it on already loaded, it initially starts to spin until it feels the disc rub, and then stops. But that is just speculation on my part.
I downloaded the service manual from manuals.com, but I have to admit, it is a bit too technical for me and there is no troubleshooting section. My husband is the mechanical one in the family and will happily apply whatever skills he has to the job, but I need to give him a diagnosis first.
Any help appreciated!
Last edited by streder on 16 Feb 2017, 03:38, edited 4 times in total.
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admin
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Post subject: Re: Troubleshooting Pioneer LD-S1: Disc Rotation Problems Posted: 07 Feb 2017, 04:16 |
Site Admin |
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Joined: 07 Aug 2002, 23:37 Posts: 4728 Location: Tokyo Has thanked: 322 times Been thanked: 1278 times
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streder wrote: However, if I shut off the player after loading the disc, and then turn it on with the disc already in it, it DOES initially start to spin, but there is a faint scratching sound, like the disc is brushing on something, and then the disc slowly stops rotating. Hello and welcome to LDDb forum! When that happens, do you get an error code on the LCD display? (like P0 or P5) It sounds like your clamping surface is dirty or dried up and is not able to hold the disc hard enough to start spinning. One easy way to check that would be to play a CD... but the LD-S1 does LD only. If you managed to remove the cover, did you try to clean up the part that clamps the disc? Julien
_________________ HARDWARE DATABASE HLD-X0/9 LD-S9 OPPO 105/205 SL-1200G LDD-1 MSC-4000 R2144 PONTUS II C45 MC257
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streder
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Post subject: Re: Troubleshooting Pioneer LD-S1: Disc Rotation Problems Posted: 07 Feb 2017, 15:39 |
Third post and above |
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Joined: 07 Feb 2017, 03:18 Posts: 5 Location: United States Has thanked: 0 time Been thanked: 0 time
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Thank you for the responses so far. I am beginning to suspect that it has something to do with the laser, and not the clamper or tray. All of the following was observed with the top cover removed: When I load a disc from the outside with the machine already on, the tray closes and the laser apperatus lifts and slides into place, but then there is a faint mechanical sound (like gears trying to turn but can't) and the disc never even starts spinning. A few seconds later the disc ejects and the laser apperatus recedes. I think this happens because when the laser moves into place, something is catching on the disc preventing it from spinning, and so the machine rejects the disc. There is a different result when I load the disc, allow the laser to slide into place, and then immediately turn off the machine. When I power the machine back up, the disc does immediately start to spin, but that's when the faint scratching noise happens, and it stops spinning again. I think this happens because the laser apperatus is still in place to read the disc from when I powered the machine off, but it has no "digital memory" of a problem. So when I power it on the machine finds itself in ready to play position and assumes the disc was properly loaded, so the spindle starts, but then the disc catches somehow on the laser apperatus and so the machine stops itself. This player IS a tank, and appears pretty clean inside, but it was subjected to a bit of jostling during the move and setup in the new house, so perhaps something shifted inside. Does this theory make any sense, or am I hypothesizing too much?
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streder
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Post subject: Re: Troubleshooting Pioneer LD-S1: Disc Rotation Problems Posted: 15 Feb 2017, 04:42 |
Third post and above |
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Joined: 07 Feb 2017, 03:18 Posts: 5 Location: United States Has thanked: 0 time Been thanked: 0 time
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Okay, so I was finally able to take some videos and figure out how to upload them to YouTube (tried uploading on here directly but was never successful). Here is the video of the scenario when the player is powered on with the disc already loaded: https://youtu.be/rnNBONhMnaMUnfortunately, this video is not exactly reflective of the problem as it existed when I originally posted. When I originally posted, it would start rotating at almost full speed, there would be a slight brushing or scratching sound, and then the disc would slowly stop and eject. In this video, it appears to start rotating several times, not quite getting up to speed before starting again, and then eventually ejecting. There is a noise associated with that, but it is not the original brushing/scratching. I think this new situation may be because I removed the top screw on the clamper to look at it, but it was hard to put back together, and maybe now that I messed with it the clamper is not getting a good grip. At any rate, here is the video of the scenario when the player is powered on, and then the disc is loaded: https://youtu.be/8gcl1QxKyNEAny thoughts welcome!
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rein-o
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Post subject: Re: Troubleshooting Pioneer LD-S1: Updated With Videos! Posted: 31 Mar 2020, 15:59 |
Jedi Master |
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Joined: 03 May 2004, 19:05 Posts: 8205 Location: Dullaware Has thanked: 1319 times Been thanked: 916 times
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rein-o wrote: Almost looks like the disc is slipping. I would try to clean the rubber mat. Did you try? Thats my only guess. Good luck.
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