Problem with CDM 9/44 (Restek Concret 1) - diyAudio
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Old 10th June 2013, 09:17 PM   #1
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Default Problem with CDM 9/44 (Restek Concret 1)

Hi all,

I just fired up my old Restek Concret 1 which uses a Phillips CDM 9/44 the other day (after some 2 years) to find that the motor turning the cd is not turning. It feels very stiff but I can turn with some force.

The arm holding the laser head sweeps across when the play button is pressed and a red light flashes a few times before the display reads ERROR.

Is it likely that the motor has seized up due to lack of lubrication? If so, is it possible to lubricate it in some way?

Any guidance would be much appreciated.

Shamsur
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Old 10th June 2013, 09:23 PM   #2
poynton is offline poynton  United Kingdom
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Check the gap between the 'frame' and the 'turntable'.

I have often found that it can be zero!!

If it is, insert a thin penknife blade between and gently prise until the gap is about 0.5mm.


Should work fins after that.



Andy

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Old 10th June 2013, 10:36 PM   #3
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Hi Andy,

Just tried that, still no luck!

There already appears to be some gap between the spindle and the chassis because when I turn the spindle, it does not scrape on the chassis.

Anything else I can try?

Shamsur
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Old 11th June 2013, 07:38 AM   #4
poynton is offline poynton  United Kingdom
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Oh well. The one I posted yesterday works perfectly so you should be able to get the CD player going soon.


Andy

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Old 11th June 2013, 07:54 AM   #5
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Oh its you Andy!

Super look forward to it.

shamsur
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Old 11th June 2013, 12:37 PM   #6
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Try lubrication before replacement. PTFE-loaded sprays are commonly available and work very well on small electric motor bearings. They typically don't say what kind of oil they contain, so may not be good for some plastics like polystyrene or PVC. Shake the can for ages before you use it.

With the player the right way up, squirt just enough through the gap under the platter so a drop or two runs down the spindle. Turn by hand to work it through the bearings at the top end...the bottom has a nylon bush so won't need any lubricant.

Pack around with tissues to stop the spray going anywhere else, and wipe away any excess.

Also works very well for computer fans, BTW, and lots of other things that don't mind being contaminated forever with PTFE.
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Old 11th June 2013, 08:19 PM   #7
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Quote:
Originally Posted by PlasticIsGood View Post
Try lubrication before replacement. PTFE-loaded sprays are commonly available and work very well on small electric motor bearings. They typically don't say what kind of oil they contain, so may not be good for some plastics like polystyrene or PVC. Shake the can for ages before you use it.

With the player the right way up, squirt just enough through the gap under the platter so a drop or two runs down the spindle. Turn by hand to work it through the bearings at the top end...the bottom has a nylon bush so won't need any lubricant.

Pack around with tissues to stop the spray going anywhere else, and wipe away any excess.

Also works very well for computer fans, BTW, and lots of other things that don't mind being contaminated forever with PTFE.
Thanks for that tip.

Do you mean something like this?
Comma PTF500M 500ml PTFE Spray Aerosol: Amazon.co.uk: Car & Motorbike

Is there something else you would recommend

Best regards
Shamsur
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Old 11th June 2013, 09:24 PM   #8
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I guess they're all very similar. Mine's "3 in 1".
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