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[Hannah Judes Dad]

My multiplayer does not want to select a disc that is inside the machine and comes up with the error 'magazine' on the display so I re-insert the magazine and it still won't play the disc or place it back into the magazine.I am thinking that the recent cold weather hasn't helped many electrical items and now need to know what is the best course of action for my money pit lovely car.

[Dave DND]

My multiplayer does not want to select a disc that is inside the machine and comes up with the error 'magazine' on the display so I re-insert the magazine and it still won't play the disc or place it back into the magazine.I am thinking that the recent cold weather hasn't helped many electrical items and now need to know what is the best course of action for my money pit lovely car.

What make and model unit are we referring to?   :-?

[Hannah Judes Dad]

What a numpty I am,it would help a lot if you knew wouldn't it.The head unit is an SC 804 and the boot changer is a Philips DC 012.Sorry I didn't post that earlier.

[Dave DND]

The DC012 can indeed be severely affected by the cold weather

There is a cartridge detection switch that has probably failed, but before stripping down to replace it, remove the unit from the car and stick in an airing cupboard or somewhere equally warm for a couple of days to really dry out, then if still faulty, some parts will have to be sourced from somewhere

 

[Hannah Judes Dad]

Thanks Dave,looks like I will be in dismantling mode this afternoon. P.S. glad to see you back on the forum after recent events.

[Dave DND]

Thanks Dave,looks like I will be in dismantling mode this afternoon. P.S. glad to see you back on the forum after recent events.

Thanks 

( I`ll be glad when its all over though  )

[TheBoy]

The Philips changer in the Rover (R770 HU) doesn't like the cold/damp either. Guessing similar technology inside.  In that case, its just No DISC and CD ERR.  Bringing the mag in overnight cures, so laser struggling with cds with condensation on?

[Hannah Judes Dad]

I brought the whole unit in from the cold this afternoon and will post a progress report on here tomorrow

[Dave DND]

The Philips changer in the Rover (R770 HU) doesn't like the cold/damp either. Guessing similar technology inside.  In that case, its just No DISC and CD ERR.  Bringing the mag in overnight cures, so laser struggling with cds with condensation on?

yes, fairly common on DC082 and DC026 changers in Rover and Vauxhall - the switches and laser lenses seem to retain the moisture.

[Dave DND]

Not wanting to open up the tin of worms regarding CD-R/RW`s too much

 

But I have noticed that they appear to suffer in the cold a lot more than standard discs. There is almost a watermark / film residue within the layers when cold. Is it that the sides are not sealed as well as production discs?

Can any of the guys who know about the disc construction verify or add to this observation?

 :-?

[Radiomarko]

CD-R normally 4 physical layers, CD-RW 6 physical layers - there is a final laquer coating sprayed on. I would imagine that the 6 layer edge is a b*gger to cover 100% hence the potential for moisture ingress, more so with cheaper media.

Stick a few in the garden and look at them every once in a while - delamination occurs remarkably quickly. See that once and you'll look after your media more carefully!

[Dave DND]

CD-R normally 4 physical layers, CD-RW 6 physical layers - there is a final laquer coating sprayed on. I would imagine that the 6 layer edge is a b*gger to cover 100% hence the potential for moisture ingress, more so with cheaper media.

Stick a few in the garden and look at them every once in a while - delamination occurs remarkably quickly. See that once and you'll look after your media more carefully!

I`ll certainly try a few outside - very interesting !!

[KillerWatt]

Not wanting to open up the tin of worms regarding CD-R/RW`s too much

 

But I have noticed that they appear to suffer in the cold a lot more than standard discs. There is almost a watermark / film residue within the layers when cold. Is it that the sides are not sealed as well as production discs?

Can any of the guys who know about the disc construction verify or add to this observation?

 :-?

Doubt for one minute it is how well sealed the dye is, more likely to be crap construction during the production process.

I still have CD-R media here (Philips Gold) that works just as well now as it did when it was burnt 16 years ago, yet I've had other media (name truly escapes me, but it was cheap crap) that failed within 3 months of being burnt due to "fogging".

For what it's worth, any player capable of reading CD-RW media is much more likely to put up with sub standard media thanks to CD-RW needing AGC to work correctly - whereas the laser gain is fixed with CD-R and not adjustable by the end user.

[Dave DND]

Doubt for one minute it is how well sealed the dye is, more likely to be crap construction during the production process

What made me think of the sealing bit, was that I recall a product many years ago that claimed to offer enhancement to CD quality by use of a special "paint pen" that was applied to the side edges to seal them up.

I remeber thinking at the time that it was complete boswellox, and the product disappeared just as fast, but did get me thinking that maybe moisture was getting inside somehow.

Noticed also on a couple of very early genuine discs (100% Acid Jazz rings a bell)  that they look as if they are starting to go "rusty" around the edges and the brown marks are creeping towards the media - Whats that all about?

 :-?

[KillerWatt]

Doubt for one minute it is how well sealed the dye is, more likely to be crap construction during the production process

What made me think of the sealing bit, was that I recall a product many years ago that claimed to offer enhancement to CD quality by use of a special "paint pen" that was applied to the side edges to seal them up.

I remeber thinking at the time that it was complete boswellox, and the product disappeared just as fast, but did get me thinking that maybe moisture was getting inside somehow.

It's certainly a possibility that I wouldn't rule out, but then some of the el cheapo discs I have had that developed defects would develop the fault bang in the middle of the dye with no visible trace that it started from the outer or inner edge.

My money would still be on it being a cheap dye used, and simply breaking down chemically for whatever reason.

Noticed also on a couple of very early genuine discs (100% Acid Jazz rings a bell)  that they look as if they are starting to go "rusty" around the edges and the brown marks are creeping towards the media - Whats that all about?
:-?

F**k knows mate, but I have at least 1 genuine "pressed silver" that started off just as you describe - and finished off with all the brown crap falling off the outer edge....along with the dye (disc is now unplayable where the last 3 tracks are concerned because it is now transparent).