Clamper Trouble by Philips Loader L1265/51 in use by Primare, Cyrus DAD3 NAD S500 - diyAudio
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Old 1st June 2013, 01:34 PM   #1
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Default Clamper Trouble by Philips Loader L1265/51 in use by Primare, Cyrus DAD3 NAD S500

Clamper Trouble by CDM12.4 Loader L1265/51 in use by Primare, Thule, McLaren CD20R Cyrus DAD3 and NADs500

The image of this clamper you will find in the attachment.

This loader (Philips order code) "3104 147 02481" is in use by follow so called "High End Audio" compact disc player models (only PCM read):

1) Tag McLaren CD20R + CDT20R
2) Cyrus DAD3
3) NAD s500
4) T+A CD 1210 R, CD1220 R
5) various other models like e.g. Quad 77, go to
problem with quad cd 77 help needed
Creek, Audiolab 8000CD, Primare D20 and D30, SONIC FRONTIERS SFCD-1 (please note: only partly equipped with this loader, in any case there is to find it's predecessor, the loader 1210 resp. L1210).
More details to this loader are to find there:
Are there Philips/Marantz CD Player Models with Loader "L1265" (L-1265) and CDM 12

The main issue by the clamper unit of this loader is a difficult to describe knocking/tickling noise (mechanical noise, to hear from the rotating disc and not from the speakers) in combination with an unwanted suspending playback until stopp mode occurs.

Some years ago I order the appropriate new parts from Philips (Clamperplate 4822 466 12037 and Clamper 4822 466 12038 so as the plastic chassis No 46 and 41) and the issue was solved.
Currently I look for a used CDR765 to get this parts, because for the playback loader device (not for the burner device) the same parts are in use - unfortunately the only possibility at the moment.

But the actually reason for the knocking/tickling noise I haven't find out until this day, because this is temporarily and not permanent audible, also independend of the thickness from the compact disc itself.

Actually only the following errors must be exist:
1) White plastic clamper roughened or bad lubrication, thus increased friction resistance on top to the clamper plate
2) Plate and clamper a bit warped/deformed
3) Plastic chassis devices from the loader a bit warped/deformed

Who knows (resp. how I can find out) the exactly reason for this?
Maybe one of the members have a associated advice from Philips (Service Bulletin-Repair Tips).

Thank you for your advices.
Attached Images
File Type: jpg Loader L1265 Clamperplate+Plastic Clamper CD Puk.JPG (61.2 KB, 44 views)
File Type: jpg Loader L1265 complete top.jpg (582.5 KB, 43 views)
Attached Files
File Type: pdf Loader L1265 exploded view I.pdf (30.7 KB, 15 views)
File Type: pdf Loader L1265 exploded view II.pdf (27.8 KB, 10 views)

Last edited by tiefbassuebertr; 1st June 2013 at 01:49 PM.
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Old 6th June 2013, 08:01 AM   #2
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