Marantz CD94mk2 drawer not opening

[Lawrence001]

I've just started a new project - getting this classic CDP to work. I looked inside and the rubber belts have disintegrated. When I hit the open button there's a whirring sound for a few seconds but I can't see any wheels turning. I'm hoping new belts will sort this out and I've seen a few sets on eBay. Does anyone know the best set, and how easy is it to replace them?

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[Beobloke]

They're a bit of a sod to replace and you'll need to keep on doing it - the damn thing chews through belts at an alarming rate! (Or maybe it's just mine...). Wonderful player, though, and well worth doing.

You can buy a kit from Thakker online for 16.99Euro so i would say that's as good a place to start as any.

[andyrlb]

I've just started a new project - getting this classic CDP to work. I looked inside and the rubber belts have disintegrated. When I hit the open button there's a whirring sound for a few seconds but I can't see any wheels turning. I'm hoping new belts will sort this out and I've seen a few sets on eBay. Does anyone know the best set, and how easy is it to replace them?

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It’ll be quite straight forward Lawrence, nothing to worry about [emoji1303]


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[Lawrence001]

It’ll be quite straight forward Lawrence, nothing to worry about [emoji1303]


Sent from my iPhone using TapatalkThanks for the words of support Andy, I appreciate them. Is this based on personal experience as apparently this mech is a particular bugger to sort out.

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[Lawrence001]

Cheers Adam, I've bought the Thakker belts, I believe I'll need to clean the wheels with isopropyl alcohol, where do you get this from, Boots?

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[andyrlb]

I’ve not done this model no but I’ve done others and cassette decks.

[Stryder5]

Cheers Adam, I've bought the Thakker belts, I believe I'll need to clean the wheels with isopropyl alcohol, where do you get this from, Boots?

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You should be able to get IPA from any decent pharmacy.

Gary

[Beobloke]

Cheers Adam, I've bought the Thakker belts, I believe I'll need to clean the wheels with isopropyl alcohol, where do you get this from, Boots?


I believe so. Mine usually mysteriously finds its way into a bottle in my bag when I'm at work... :whistle:

[walpurgis]

ebay: https://www.ebay.co.uk/itm/Isopropyl-Alcohol-99-9-pure-ISO-Isopropanol-IPA-Rubbing-Alcohol-Choice-of-sizes/132558553797?hash=item1edd1b02c5:m:mGL6KlSK4a5vJZ0 XIf8lS4w

[Lawrence001]

Thanks, is it legal to post that stuff??

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[DGP]

Hi Lawrence

I've fitted a good number of Thacker belt kits to Marantz high-end CD players - there should be a very full thread on AOS to which I contributed some time two year ago. It's intricate work but not impossible. The one thing you must deal with is the tensioned wire drive which has to come off to allow access to one of the belts. Don't attempt this unless you have a very certain method of stopping the wire unravelling. That and the frustration of dropping tiny circlips into the heart of the machine...

You'd do well to check the foam bump stops and the foams on the clamp as these will have aged badly I guess. The mechanism sled can get badly fouled by degraded plastics foam so check the runners.

PM me if you want a one to one.
DGP

[Lawrence001]

Hi Lawrence

I've fitted a good number of Thacker belt kits to Marantz high-end CD players - there should be a very full thread on AOS to which I contributed some time two year ago. It's intricate work but not impossible. The one thing you must deal with is the tensioned wire drive which has to come off to allow access to one of the belts. Don't attempt this unless you have a very certain method of stopping the wire unravelling. That and the frustration of dropping tiny circlips into the heart of the machine...

You'd do well to check the foam bump stops and the foams on the clamp as these will have aged badly I guess. The mechanism sled can get badly fouled by degraded plastics foam so check the runners.

PM me if you want a one to one.
DGPCheers David, I saw a thread with an old photo but I couldn't make it bigger for some reason. I'll open the player up again when I get some alcohol to clean it up and have a better look at access. I could only see three obvious belts, two down the side and one controlling the clamp, maybe I missed a second on the clamp wheel/cam.

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[Lawrence001]

ebay: https://www.ebay.co.uk/itm/Isopropyl-Alcohol-99-9-pure-ISO-Isopropanol-IPA-Rubbing-Alcohol-Choice-of-sizes/132558553797?hash=item1edd1b02c5:m:mGL6KlSK4a5vJZ0 XIf8lS4wBought some, ended up getting 500ml for under £6 even though I don't need it as I begrudge paying half that for 50ml!!

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[walpurgis]

Bought some, ended up getting 500ml for under £6 even though I don't need it as I begrudge paying half that for 50ml!!

It won't go to waste, it's very good for cleaning things.

[Lawrence001]

It won't go to waste, it's very good for cleaning things.That's what I thought, including round the house I imagine.

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[Lawrence001]

Hi Lawrence

I've fitted a good number of Thacker belt kits to Marantz high-end CD players - there should be a very full thread on AOS to which I contributed some time two year ago. It's intricate work but not impossible. The one thing you must deal with is the tensioned wire drive which has to come off to allow access to one of the belts. Don't attempt this unless you have a very certain method of stopping the wire unravelling. That and the frustration of dropping tiny circlips into the heart of the machine...

You'd do well to check the foam bump stops and the foams on the clamp as these will have aged badly I guess. The mechanism sled can get badly fouled by degraded plastics foam so check the runners.

PM me if you want a one to one.
DGPSo, I cleaned up the wheels to a reasonable level last night. I can see the issue with the wire blocking access to the inner wheel. These circlips look fiddly as well, it's a veritable minefield around there! What happens if that wire comes off it's wheel, I take it that's to be avoided at all costs?

I also can't work out which belt goes where, there are two shorter thinner ones, one thicker and slightly longer then one thick long one. Online guidance is mixed, one shows the two thick ones on the drawer mech behind the wire, while another says the thin ones both come off the motor wheels while the thicker ones go on the disc clamp cam and drawer mech (the latter being the long one which is obv.)

Lastly, I have a tube of silicone grease, it's a bit thin compared to some thick greases I've seen used in CD mechs, should I use this somewhere while I've got it open?

Thanks

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[DGP]

Hi - there are four belts in the Thacker kit. Two shorter identical belts are the lower belts on both sides of the mech. The thicker of the two larger belts goes on the clamp and the other on the slide. The clamp side is relatively easy to replace but you need to remove the clamp pulley (which means the circlip) to get at the bottom belt. You may also have to remove the bracket and clamp microswitch. The other side is a can of worms compared to the clamp side. You will not be able to wind the wire back on the drum correctly if you let it slip. My technique has been to remove the power switch so I can take off the rod connecting the front panel to the back panel switch to give some room to work. I have then fixed the wire wound on the nylon pulley with heat resistant silicone adhesive tape of the type use computers - something that won't leave gum behind. I then remove the circlip and unhook the spring tensioner before removing the pulley. Get the belt below sorted then the slide belt before replacing the pulley with the wire. Reattach the tensioner before removing your tape.

There is a circular foam washer on the driven side of the mech that may have perished and will leave black plastics gum on the sled rail. This need cleaning off is present - I've used slightly oiled replacement felt washers with success. There are two foam bump stops almost buried inside the back of the fascia which may need replacing too. The one on the non-rail slide of the mechanism (the sled side) is prone to have left gum all along sled - this needs cleaning off if present and a tiny bit of silicone grease used on the sled faces. I've used O-ring grease from camera or scuba sets with success but too thin is not good as it will 'walk' and eventually get into the laser if you're unlucky. The clamp foams with probably have perished too and should be replaced - some seemed to be a felt pad and a foam button where only the foam needs replacing.

You can check the clamp cam is working by moving the mech by hand - failure to engage the microswitch from a slipping belt is the commonest cause of failure in my experience. Isopropyl alcohol is your friend when you reassemble the belts and pulleys and go easy with the silicone grease!

Check the laser lens is clean too but use only lens cleaner and the folded end of a tissue as the focusing mechanism is delicate.

Best of luck - you can still PM me if you need help. Just don't let that wire unravel.
DGP

[Lawrence001]

Hi - there are four belts in the Thacker kit. Two shorter identical belts are the lower belts on both sides of the mech. The thicker of the two larger belts goes on the clamp and the other on the slide. The clamp side is relatively easy to replace but you need to remove the clamp pulley (which means the circlip) to get at the bottom belt. You may also have to remove the bracket and clamp microswitch. The other side is a can of worms compared to the clamp side. You will not be able to wind the wire back on the drum correctly if you let it slip. My technique has been to remove the power switch so I can take off the rod connecting the front panel to the back panel switch to give some room to work. I have then fixed the wire wound on the nylon pulley with heat resistant silicone adhesive tape of the type use computers - something that won't leave gum behind. I then remove the circlip and unhook the spring tensioner before removing the pulley. Get the belt below sorted then the slide belt before replacing the pulley with the wire. Reattach the tensioner before removing your tape.

There is a circular foam washer on the driven side of the mech that may have perished and will leave black plastics gum on the sled rail. This need cleaning off is present - I've used slightly oiled replacement felt washers with success. There are two foam bump stops almost buried inside the back of the fascia which may need replacing too. The one on the non-rail slide of the mechanism (the sled side) is prone to have left gum all along sled - this needs cleaning off if present and a tiny bit of silicone grease used on the sled faces. I've used O-ring grease from camera or scuba sets with success but too thin is not good as it will 'walk' and eventually get into the laser if you're unlucky. The clamp foams with probably have perished too and should be replaced - some seemed to be a felt pad and a foam button where only the foam needs replacing.

You can check the clamp cam is working by moving the mech by hand - failure to engage the microswitch from a slipping belt is the commonest cause of failure in my experience. Isopropyl alcohol is your friend when you reassemble the belts and pulleys and go easy with the silicone grease!

Check the laser lens is clean too but use only lens cleaner and the folded end of a tissue as the focusing mechanism is delicate.

Best of luck - you can still PM me if you need help. Just don't let that wire unravel.
DGPThanks David, I'm now thinking of getting someone else to do this, do you know of anyone London way?

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[DGP]

Sorry Lawrence I don't know anyone who'd do this work for you - shame I've just moved out of the NE as Durham wouldn't have been too much of a stretch.
DGP

[Lawrence001]

Sorry Lawrence I don't know anyone who'd do this work for you - shame I've just moved out of the NE as Durham wouldn't have been too much of a stretch.
DGPNever mind thanks anyway, I'm sure I'll get there.

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[AD Audio]

Hi Lawrence,
I did this recently on the same machine and I'm based in Wimbledon, south west London.
Let me know if you need help,
David

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[Lawrence001]

Hi Lawrence,
I did this recently on the same machine and I'm based in Wimbledon, south west London.
Let me know if you need help,
David

Sent from my ONEPLUS A5000 using TapatalkThanks David, that's brilliant, did you sort the wire belt issue ok? If you have any tips initially please let me know, if I'm still a bit scared of doing it, could I pop round one day for a hand?

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[AD Audio]

Hi Lawrence, I'll post a link to my Website where I describe what I did. I will be away for a week or so, so depends if you are in a hurry. It's really not as bad as it seems. You can give me a ring Tuesday onwards our if you can't wait.


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[AD Audio]

https://adaudioconsultants.wordpress.com/2018/02/28/marantz-cd-94-new-belts-and-braces/

This is the Blog article on how to do it
David

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[Lawrence001]

Thanks I'll have a go when I've got a bit of free time.

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[Lawrence001]

Well it's taken me a while to pick up the courage to have a go, I spent a few hours this evening fiddling around inside. A few hairy moments, lost the little clip that held the annoying pulley with the metal wire twice but finally got the belts on. Fired up, pressed open/close and...



...


...


The drawer opened nicely, took a CD and played it in seconds. Result, my quite pricey gamble on the faulty machine has paid off!

[Spectral Morn]

Well it's taken me a while to pick up the courage to have a go, I spent a few hours this evening fiddling around inside. A few hairy moments, lost the little clip that held the annoying pulley with the metal wire twice but finally got the belts on. Fired up, pressed open/close and...



...


...


The drawer opened nicely, took a CD and played it in seconds. Result, my quite pricey gamble on the faulty machine has paid off!

Delighted for you :cool: