CED VideoDisc and Player Discussion

[Jim Hultberg]

Hey guys, i'm the new kid on the block around here and I have a SJT-400 player that has a problem with the video signal. After I load the disk, it starts to play but then all of a sudden the picture gets scrambled and disappears, but then comes back again. it does this about every 5 or 6 seconds, sometimes it goes a bit longer before it blinks out. Also there is a bumping sound inside the case in the right front section. I think that's around the same time I lose the video signal. I'v done a proper belt replacement, and lubricated the correct gears. I'm planning on maybe getting a replacement stylus for it. But before I pull the trigger on that I thought I,d ask some experts first.

[jsdspif]

I'd just start by sending the stylus to CEDatum for a free inspection/cleaning.Purchasing a new stylus so you have a spare is pretty handy but don't go buying one on ebay for $100 or whatever that probably won't work anyway and you would have to send that to CEDatum. CEDatum may have stylus's for sale,that would be your best bet. Then I'd make sure your disc has no defects by visually inspecting it (without touching with bare fingers) then play the disc with the good cartridge with the cover removed so you can see what's going on. I think there was a post somewhere talking about the automatic stylus cleaner in the player,that clicking may be that stylus cleaner. I don't know what would happen if that third reduction gear was broken enough to to not work properly but work somewhat and possibly causing trouble. Or some other gear somewhere that may be damaged just enough to cause a problem. Those are just ideas that pop into my head. But I'd def. start off with my recomendations at the start of the post.

[banjodrummer]

Does it do that with all discs you put in, or just a couple? If it's not all of them, then it sounds like to me that the discs themselves are more than likely in need of pre-playing. The silicon lube on the discs, over time, settle into the grooves, so the stylus won't ride in them perfectly the first couple times. After a few playbacks, the lube should be redistributed and the disc should play much better. It's hard to know exactly what's going on without a video, but to me it sounds like that's what's happening.

The sound you're hearing, I'm not sure what that is exactly. That's the location of the stylus arm motor, but it shouldn't be making a bumping sound. And if the third reduction gear were broken, then the arm wouldn't be able to move at all; but if you can actually advance on a disc, then the gear isn't broken.

Hope that helps.
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Austin N.

[Jim Hultberg]

I don't think its with all the disks. And the unit does advance with out any trouble. So it's probably as you said. Also the disks I do have hadn't been played in a long time before they were sent to me. I appreciate your wisdom. Thanks

[johngreve]

Sounds like that particular disc just needs a pre-play to me.
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SJT400. SGT 200
SKT400. SJT 100
SJT 300. Sears 94....150
SGT250 Zenith VP2000
SJT200. 800+ discs