Please help, Marant CD80 is not working properly!

chlo · 9th January 2004, 10:12 AM

Hi everyone,

I wonder if you can help me to sort out the problem.

The CD plays the first 2 or 3 tracks is fine, after that the sound distorted and crakled. I try to press the next track and it stops playing.

I have changed all elc caps, new opams and also new clock and a seperate clock's PSU. However, it can not work properly as I mentioned above.

Many thanks in advance.

chlo.:confused:

Harleyjon · 2nd February 2013, 11:06 PM

Try a new Travers Motor as it sound like it is sticking. Replacement Laser Assemblies for the Philips machines are readilly available from eBay/CPC etc.
I expect the laser is getting stuck and can't follow the track properly.

poynton · 3rd February 2013, 01:14 PM

Two things :-

When you upgraded the caps, did you change ALL of them ??

When you removed/replaced the cd-mechanism, did you ensure the flexible ribbon cable was correctly placed ??

Andy

stephensank · 3rd February 2013, 07:10 PM

This is a CDM1mkII unit, according to the list. As such, there is NO doubt that the tracking radial motor is perfectly fine, as long as there is no physical interference with the ribbon cable from it. The ONLY mech issue these ever have is wear of the upper disc clamper "bearing" plate, but this does not sound like the problem. Make SURE you replaced the 33uf blue axial elec cap with the same value(nichicon, for reliabity's sake) very near the main servo chips. If this has been done, then it sounds to me like you just need to do a proper job of adjusting the running laser current. This assumes that the new clock & etc. you installed are operating correctly, of course. You need to do the laser current on a variety of cd's & cd'r's, to get best compromise range, or it will not play discs consistently well.

amc184 · 4th February 2013, 07:29 AM

First post is almost a decade old. Hopefully he fixed it.

stephensank · 5th February 2013, 02:43 AM

Quote:

Originally Posted by amc184

First post is almost a decade old. Hopefully he fixed it.

Doh! How did I miss that?

9th January 2004, 10:12 AM	#1
chlo diyAudio Member Join Date: Jan 2004 Location: London	Please help, Marant CD80 is not working properly! Hi everyone, I wonder if you can help me to sort out the problem. The CD plays the first 2 or 3 tracks is fine, after that the sound distorted and crakled. I try to press the next track and it stops playing. I have changed all elc caps, new opams and also new clock and a seperate clock's PSU. However, it can not work properly as I mentioned above. Many thanks in advance. chlo.:confused:

3rd February 2013, 01:14 PM	#3
poynton Magneto the Gravity Man diyAudio Member Join Date: Mar 2005 Location: A life on the ocean waves when I'm not at home in N. Wales (but I'm not Welsh so no sheep jokes!)	Two things :- When you upgraded the caps, did you change ALL of them ?? When you removed/replaced the cd-mechanism, did you ensure the flexible ribbon cable was correctly placed ?? Andy __________________ If it ain't broke, break it !! Then fix it again. It's called DIY !

4th February 2013, 07:29 AM	#5
amc184 diyAudio Member Join Date: May 2007 Location: Christchurch	First post is almost a decade old. Hopefully he fixed it. __________________ Inside Classic Audio, my blog on repairs, modifications and anything else to do with audio.

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2nd February 2013, 11:06 PM	#2
Harleyjon diyAudio Member Join Date: Dec 2012 Location: England	Try a new Travers Motor as it sound like it is sticking. Replacement Laser Assemblies for the Philips machines are readilly available from eBay/CPC etc. I expect the laser is getting stuck and can't follow the track properly.

3rd February 2013, 07:10 PM	#4
stephensank diyAudio Member Join Date: Oct 2006	This is a CDM1mkII unit, according to the list. As such, there is NO doubt that the tracking radial motor is perfectly fine, as long as there is no physical interference with the ribbon cable from it. The ONLY mech issue these ever have is wear of the upper disc clamper "bearing" plate, but this does not sound like the problem. Make SURE you replaced the 33uf blue axial elec cap with the same value(nichicon, for reliabity's sake) very near the main servo chips. If this has been done, then it sounds to me like you just need to do a proper job of adjusting the running laser current. This assumes that the new clock & etc. you installed are operating correctly, of course. You need to do the laser current on a variety of cd's & cd'r's, to get best compromise range, or it will not play discs consistently well.

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