Question about JVC MX-D761T Shelf System

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CD players, All sound

I have mulitiple problems with my MX-D761T system:
First off when a CD is inserted into any of the tracks it will not play. The motor will spin as if its going to play and then it says no disc. Have used multiple discs in all of the 3 tables same outcome each time.
Also I can not get any sound out of the system. I have even tried using a set of headphones plugged into the front of the system to see if I was connected improperly or if it was faulty wiring or wires. No avail. Not really sure whats going on with it. Any help would be appreciated. Thanks in advance.

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: Disc Player not working

Please notify me when, and if, there is a solution. Thanks

Posted on Dec 07, 2007

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SOURCE: Error message No Disc

Unit has bad disk t-table motor

Posted on May 07, 2008

VOTIT
  • 2071 Answers

SOURCE: CD Player Problems

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;

Regards,
VOTIT

DON'T TO FORGET TO RATE

Posted on Aug 17, 2008

fkuk
  • 311 Answers

SOURCE: JVC mx-d761t fuse

are you talking about the internal fuse? or the fuse in the plug

im assuming that you are talking about the internal fuse
get a standard glass tube fuse at the amperage you know about

i belive it does not matter what type of fuse it is as long as the diamentions are the same its good

Posted on May 12, 2010

AJIN G
  • 6694 Answers

SOURCE: JVC /MX-D761T/ compact component system> The

hi,
Is there is power in your system. is there is any power indication.if not then you have to check the Powre transformer, its fuse, and the small standby transformer near the power transformer. If the stanby transformer is faulty then there will no power indication in your system.

If there is power and the cd is not reading then, You have to check the laser pickup unit inside your system. First of all purchase a laser cleaning cd and insert the same in to your system. If will clean the laser pickup unit to some extent. if then also it is not reading any cd then the laser pickup is faulty. As it has a changer mechanisum it will be difficult to you to replace the lase pickup unit.Because you have to remove so many parts from the mechanisum to reach to the laser pickup unit. If so try to consult some one experienced in it.
ok

Posted on Jul 30, 2011

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