Meridian 506 not recognising cds

James

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Hi there,

As a new member to this forum I posted what is written below in the newbie section but was told I'd be better off putting it here - so here it is.

I joined this forum because it was the only place I found that had anything about Meridian cd players - although I can't find the thread now that I want to. But nevermind this looks like a pretty good place and I am looking forward to hearing from some of you.

About 20 years ago I set up a sound system: Plinius SA50 amp and M7 preamp, Lambert speakers- these are all NZmade so you may not have heard of them, and a Meridian 506 cd player. Later I put in a Fons CQ30 turntable (SME arm, Dynavector 10Xs head). You may not have heard of the Fons either because it is now about 40 years old - still works brilliantly. I have reasonable cables but nothing spectacularly expensive. I've tried out expensive ones but really couldn't tell the difference so haven't bothered to put any money there. I also have a home theatre system: Cyrus One amp with an HD converter (I think that's how you talk about it), an Optoma HD20 projector, an 82inch screen and Paradigm Atom Monitor shelf speakers. I am not sold on surround sound - I would rather have a good stereo sound. Amazingly, the Paradigms are just about as good as the big Lamberts.

Everything has been mostly fine with both systems although the Plinius makes a hum which I might ask for comments on later. Right now though my Meridian 506 has stopped recognising cd's. Every time I put in a cd it says 'no cd' on the display. I am hoping this is just the laser which is either dirty or dead. I understand that I may be able to replace the laser but so far I haven't been able to get the Meridian apart. I am not a very experienced techie but I have done some simple things and I thought that replacing a laser might be within my capabilities - especially as I haven't found anyone locally whom I would trust with gear like this. But to do this I need to get into the guts of the machine - at least to look at it and see if I could risk fiddling with it. I have taken out all the screws that look like they hold the cover in place but it doesn't budge and I am a bit scared of breaking it - especially the glass top. I am hoping that one of you may have opened up a Meridian 506 before and would be willing to say how to go about doing it. I would also appreciate any comments on whether it is possible to replace the laser with a non Phillips one and if there are any things I need to know in order to do this. Indeed any response will be eagerly read.
 
I very much doubt that even an experienced engineer would attempt to change from the original laser mechanism. However, if the parts are available, a regular service shop should be able to replace it for you.

I would definitely email Meridian in the uk to check who their current importers are if you aren't sure. I still follow the company from afar having once be the proud owner of a 208, the cd and preamp combined.

https://www.meridian-audio.com/en/contact/

Come to think of it, the manufacturers are the best place to ask about servicing anyway. I would advise against tinkering as you may do more damage than good.
 

PT_2014

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Nopiano is right, definitely do not attempt to fix this yourself, could be an expensive do...

I've used local service engineers before but I make sure I go to a dedicated Hi Fi retailer with a dedicated service dept. I would also ensure that they know the insides of a Meridian player too...

Phil
 

ellisdj

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For Meridian Repairs I would recommend Chris at the Meridian Repair Shop.

He is a former Meridian Engineer - very honest and helpful.

http://meridianrepairshop.co.uk/

He could have had a ***** of money out of me twice now but both times he has given me advice costing me nothing.

Others have heartily recommneded him as well.
 

andyjm

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James said:
Right now though my Meridian 506 has stopped recognising cd's. Every time I put in a cd it says 'no cd' on the display. I am hoping this is just the laser which is either dirty or dead. I understand that I may be able to replace the laser but so far I haven't been able to get the Meridian apart. I am not a very experienced techie but I have done some simple things and I thought that replacing a laser might be within my capabilities - especially as I haven't found anyone locally whom I would trust with gear like this. But to do this I need to get into the guts of the machine - at least to look at it and see if I could risk fiddling with it. I have taken out all the screws that look like they hold the cover in place but it doesn't budge and I am a bit scared of breaking it - especially the glass top. I am hoping that one of you may have opened up a Meridian 506 before and would be willing to say how to go about doing it. I would also appreciate any comments on whether it is possible to replace the laser with a non Phillips one and if there are any things I need to know in order to do this. Indeed any response will be eagerly read.

It could easily be dust on the lens. Open the 'drawer' and the lens is clearly visible. Use a fine camel hair brush (or similar) to remove the dust from the lens. Be very careful - the lens is supported on a delicate 'voice coil' drive system to keep it in focus, the suspension is easy to ruin.

If that doen't do it, the chances are the laser diode has given up. You can replace the lens / laser block, or the whole laser drive system as a package. I wouldn't attemp either fix yourself, the recommendations above for an expert are a good start.

I don't understand your 'non-Philips' comment. There aren't that many manufacturers of the actual innards of CD players, Philips was one, and as far as I understand it, Meridian used Philips drives.
 

Overdose

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Your money would be better spent replacing the 506 with a newer or new universal player.

The transport mechanisms are no longer made and maybe not even available, so the cost to source one and have it fitted, will likely as not, buy something a bit more up to date.

If you do want to go for a replacement, make sure you're not being sold a used drive as new 'old stock'.
 

emperor's new clothes

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Hi James,

A pity that Cambridge is 12000 miles away from delightful Kiwiland as Meridian's after sales service is outstanding in my experience. My 506 started to skip back to the start of tracks right at the end of the 5 year warranty and the whole transport/laser mechanism was replaced FOC . Their engineer also phoned and offered the latest (2000) 24 bit dacs at cost and I got back a "508 in a 506 case". 14 years on is still going strong.

Agree with above, if a simple lens clean does not solve the problem, self repair not recommended and a replacement probably more cost effective. I have auditioned a lot of potential replacements and nothing comes close in the budget market, IMHO. The Arcam irDAC offers a similar sound to my ears. When my 506 finally expires, will probably switch to streaming as have a Marantz UD7007 for disc playing.
 

andyjm

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Overdose said:
The transport mechanisms are no longer made and maybe not even available, so the cost to source one and have it fitted, will likely as not, buy something a bit more up to date.

The 506 used two types of Philips transport, the most likely is VAM1205 for the whole gubbins, or CDM12.5 for the laser block only. Naim also used this in players of a similar vintage. New VAM1205 / CDM12.5 are apparently tough to come by, but the laser block (CDM12.4) from a VAM1204 fits, and is available on the net.

Lots about this on the Naim / Meridian owners websites.

Still wouldn't suggest you attempt the fix yourself, but the bits can still be obtained if you want a third party repairer to do the work.
 

James

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Thank you to all of you who have replied - I appreciate the quick responses. I did look at the lens before I wrote in and to my unaided eye it looked ok but on closer inspection with a magnifying glass I saw that it was quite dirty. So I used a fine brush and a drop of isopropyl alcohol to clean what I assume is the lens cover and voila it now goes perfectly. I am so pleased; this machine has been a constant source of joy for so long now and I wasn't at all looking forward to having to replace it. My father used to tell me to always buy the best tools you can afford and because of my current circumstances I was starting to get a bit downhearted at the prospect of not being able to replace it with anything comparable. Thank you again for your help.
 

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