Hi guys I know this topic has been discussed before,however the trail goes cold so here we go again.
I have 2 cd changers the one does not play and just says invalid disc ?
The other will play but only the first 1 minute or so of the first track of each disc , will not play track 2-3-4-5-6-and so on
If I give the changer a gentle wack it will go further up to 3 minutes and sometimes the second track will play but only 20 seconds .
I have an ideal of the issue with the second one that plays but would be more confident if someone else comes up with the same idea 🤔
Any suggestions welcomed 🙏 1990 3.5 v8 defender
2000 4.6 v8 30th anniversary prins lpg
2004 4.4 v8 vogue prins lpg
2011 4.4 TDV8 Vogue
faultmate extreme
rsw allcoms
Autel 906BT
Gap iiD tool

Last edited by klf400 on 5th Feb 2023 2:35am. Edited 1 time in total

watching RR 2005 4.4 petrol
Any spelling mistakes are the fault of spellchecker
Previous MG J2, CITROEN light 15 x 2 gone unfortunately
Present MERC 180e, RANGE ROVER L322, JAGUAR XJS, MERC 280SE, MG F, JAGUAR S-Type 6v 2003, jaguar s-type 8v 2004, Ford Cougar

have you tried a head cleaner like allsop laser lens cleaner new vehicle purchase
2007 supercharged 4.2 java black .sand leather vogue se trim
previous cars .
range rover classic 200 tdi
discovery 1 200 tdi
freelander 2 2008 hse
discovery 1 300 tdi
p38 4.0 ltr man r380 ex royal support vehicle on v5c
discovery td5 man off roader

I tried some methylated spirit on a cotton bud , still the same 🤔 1990 3.5 v8 defender
2000 4.6 v8 30th anniversary prins lpg
2004 4.4 v8 vogue prins lpg
2011 4.4 TDV8 Vogue
faultmate extreme
rsw allcoms
Autel 906BT
Gap iiD tool

mine suddenly stopped working
does not play and just says invalid disc RR 2005 4.4 petrol
Any spelling mistakes are the fault of spellchecker
Previous MG J2, CITROEN light 15 x 2 gone unfortunately
Present MERC 180e, RANGE ROVER L322, JAGUAR XJS, MERC 280SE, MG F, JAGUAR S-Type 6v 2003, jaguar s-type 8v 2004, Ford Cougar

Same problem - happened during the very cold weather if that's significant (condensation?). 2011MY 4.4TDV8 Autobiography Baltic Blue
TVR Griffith
Alfa Romeo Mito QV

We have a result, I decided to look at the cd changer that would only play the first minute or so of the first track of each disc
I removed the cover 4 screws , followed by the cover on the rear that houses the multi plug and circuit board 4 screws + 2 on what looks like a heat dispersal plate ,
you have to peel the warranty label to do so .
Remove the cover exposing the circuit board remove 3 screws to release the top cover.
Once inside remove the 4 shock absorbers and 2 suspension springs then unplug the Ribbon cable from the rear circuit board this will allow the lower cover to be removed just leaving the internal cd changer.
Next turn over the changer so you can see the laser motor drive.
There is a small circuit board held in with 1 screw to be removed adjacent to the motor drive cogs , this will expose a tension spring on the driveshaft for the laser held by 1 screw remove the spring followed by the laser ribbon cable .
There are 2 tabs on the ribbon cables you need to push them back then ribbon will release.
You can now lift the laser head out
On close inspection the drive cog on the worm gear had a hairline crack in it which allowed the teeth to open up causing it to jam .
As I had another changer available I swapped the worm drive from the other and reassembled everything in reverse and it now works perfectly

No luck on the changer that comes up invalid disc 😤
Sorry guys I forgot to take pictures but I do have one of the cog

Click image to enlarge