Question about Audio & Video Receivers

1 Answer

I have a Tivoli model cd which will not take the cd anymore - how can i fix this?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 2,071 Answers

Manually cleaning the lens
To locate the laser lens, look around the door or drawer of the DVD player and you will see a small circular disc, which is often called the turntable or disc platter. Right off the edge of the platter you should see a small clear lens. There are some manufacturers that have had problems with the lens, depending on the age of the unit. In these problem players, moving the unit to a different location, turning the unit upside down, or sometimes even without moving the unit, the lens can become detached from the laser assembly and floats around inside the unit. You can re-glue it back with a little crazy glue, BUT it must be perfectly centered, and without getting any glue on it. So, if you don’t see the plastic lens, but instead see the laser pick-up assembly, look around for the lens inside the unit and glue it back on.
To clean the lens you must use very little pressure. Take a cotton swab and barely moisten it with plain, non-scented, or oily type alcohol. In a swirling motion, very gently rub the lens until you’ve covered it entirely. Then repeat using the dry end.
If the cleaning didn’t help, don’t despair just yet. You can see if there’s a problem elsewhere in the unit by using a few simple tricks and tips.
First thing you want to see if the unit’s laser is in good working order. This method isn’t foolproof, but most of the time works admirably. When you insert a disc, see if you can look up underneath where the disc sits on the turntable. Observe the laser lens going up and down. If the lens is trying to focus, that’s good! After a few seconds of the lens trying to focus, the platter should start to spin. On almost every CD/DVD unit I've encountered, the unit won't spin unless the laser has properly focused on the surface of the disc. If the unit spins up and and then shuts down, you should check and make sure the laser pick-up assembly slider mechanism is working without any obstructions and that the small chrome rail that it slides on is slightly greased. Don’t go overboard with the grease though, as too much can cause all sorts of problems.
The slider mechanism, depending on the age of the unit and the manufacturer, consists of the small chrome rail, a drive motor, a small gear assembly, and (in some units) a small belt that drives the slider unit via the motor. This small belt causes all sorts of problems. If the belt is broken or slipping, it can cause skipping, dropouts, or simply no start up at all. Also, if the belt breaks in the middle of the disc, the drive mechanism gets hair or dirt wrapped up into the gears, or the pick-up assembly doesn’t return to the start position (called home), the unit will (99% of the time) refuse to release the disc, causing it to become stuck inside the unit. There’s a little micro or leaf type switch located at home position that sometimes gets dirty or breaks and, causing this problem also.
If the disc starts to spin slowly and doesn’t come up to speed, the spindle motor that’s attached to the turntable platter is a common problem. There could also be a problem with the spindle motor driver controller IC or the power supply regulator that supplies voltage to the driver IC. If the disc starts to spin and then spins really fast, or stops and starts to spin backwards, your problem is the laser pick-up assembly or the servo control circuit. If you continue to have problems after cleaning and checking the other things listed above, you may have a problem with the player's alignment. Of course, one of the problems you'll face checking alignments on a DVD/CD player is that you’re going to need to use an oscilloscope on most of them. If you have the proper tools and equipment, the first thing to look at is the RF pattern of the unit while its playing. It should be a sharp and clear pattern. If it's dull and smeared, then the laser could be weak.
Also, in these units are very critical alignments called the focus/tracking gains and offsets. When these alignments are off, it can often cause intermittent troubles. As the unit ages and parts change value, so do these alignments, and will need to be checked. In my time as service technician repairing DVD/CD players, 65% of the laser pick-up assembles I have tested were good and only needed a small adjustment. Today's technology makes it unfeasible for a shop to hook up a DVD/CD player, and even some recorders, to their equipment and make these adjustments because of the cost involved.

hope this may help;


DON'T FORGET TO RATE;


Regards,
VOTIT

Posted on Jul 28, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Panasonic sa pm65md


No...These are a nitemare on Elm Street.

Buy a new one

Jan 19, 2014 | Technics Audio & Video Receivers

1 Answer

My three-year-old Model One has started making very loud popping/cracking noises intermittently on the FM band. It can work fine for several minutes, even half an hour or so, but invariably the noises...


I found in some cases that the tuning capacitor collects small particles of dust causing snaps, pops, and drop outs. One solution is get some electronic cleaning spray from radio shack or service shop. now open the back of the radio, look for square plastic box it is transparent and you will see metal plates with small screws. On the top you will see small round holes in the plastic, attach the supplied straw and spray inside two good blasts should do it. rotate the tuning several times back and forth this cleans the plates, until spray dries the station will be on wrong frequency until dries

Jan 07, 2011 | Tivoli Model One

1 Answer

The iPod connection on my Tivoli audio is broken. Do you know where I can fix it in Swedwn, Gothenburg?in sweden


Unfortunately you will have to contact the local delearship for help in this regard who can guide you for a service centre in Sweden.
Howeverf you can click this link and post your problem to the official site of Tivoli

Nov 05, 2010 | Tivoli Audio & Video Receivers

1 Answer

My Tivoli CD player is ejecting cd's. Those it does accept play badly and jump. I am trying to insert a CD cleaner, but this gets ejected as well!!! Help!!


If it is under warranty simpyl return it to get it repaired.

It seems either there is something stuck inside what makes it think there is already a CD inside or your eject button is stuck internally. If not under warranty and you're a bit handy, try to open it and see if there is anything inside the CD area that makes it eject CD's or if one of the small wires connected to your eject button is loose or if there is a shortcut inside.

Aug 08, 2008 | Audio & Video Receivers

1 Answer

Speakeres killer


Are you paying attention to the power rating of your speakers? Your receiver has a high power capability and would be quite capable of destroying speakers with inadequate power handling capabilities.

By the way, the Tivoli was a great place to be in 1963 for a young guy!
Hope it still is . . .

Apr 23, 2008 | Technics SA-DA10 Receiver

1 Answer

Broken cassette deck


just buy a new 1 you gipo

Mar 30, 2008 | Audio & Video Receivers

1 Answer

Hi, I took off my car Kenwood CD-player and installed it into my new car but unfortunately it doesn't work anymore because once i turn it on it asks me to enter a code.Can you,please,send me this code...


Dear Memo,
you can download the manual for this ,player, from this site:

http://www.devicemanuals.com/guide/Car%20CD%20Changer/Kenwood%20French/Kenwood-French-KDC-MP625-CD-DVD-Changer-Owner's-==TVRFd05qVXk=.html

in this manual you can get the security code for this Player also.


Cheerup and be happy always

Mar 27, 2008 | Audio & Video Receivers

Not finding what you are looking for?
Audio & Video Receivers Logo

Related Topics:

118 people viewed this question

Ask a Question

Usually answered in minutes!

Top Audio & Video Receivers Experts

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

The Knight
The Knight

Level 3 Expert

68301 Answers

yadayada
yadayada

Level 3 Expert

60960 Answers

Are you an Audio and Video Receiver Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...