Question about Audio Players & Recorders

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Since you have changed the optical unit and the assembIy then we must come to the conclusion that the mother board is not processing the RF signals fromt the laer. One important thing if you had overlooked is to confirm if you have removed the short off the new laser head before you installed. If not do so as this short is a brdge of solder that has to be taken off using a static free soldering iron. If you had already done this then I am afraid that you mother board iss faulty and may end up with an expensive repair. Evaluate the cost before you want to go forward. hope to be helpful. Good day.

Posted on Jul 15, 2010


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When loading a dvd it displays, "NO DISK". Is it

There are mainly three motors for most of the DVD players. One to spin the disc we insert in, other to load the laser pickup unit to-and-fro inside it to read the disc and an other one to load the tray mechanism 'in-out'. According to your description, the disc spins inside, and you can hear its spin. So motor which spins the disc has no trouble at all I should say. Then comes to the second motor that moves the laser assembly inside it. If it do not work, the laser pickup unit won't move and no reading will take place and 'No Disc' display will be the result. The last chance is with Laser Pickup Unit itself. Just get this unit repaired by any well experienced service technician or by the authorised service center, because, there are special tools to open this unit. As it is a compactable one, more care should be given to it while repairing. Suspect the second motor I described earlier, and the Laser Pickup Unit. OK.

Jun 14, 2011 | RCA DRC628 Portable DVD Player

1 Answer


Remove the dvd cover and clean the lens whith a cotton sprinkler softly.
Try play it again, if the trouble persist, watch that the disc is turning with good speed.
if the disc do not turn or it is turning slow, change the motor turn disc, in countermove change the pick up laser.

Feb 13, 2010 | Memorex MVD2042 DVD Player

1 Answer

Unable to read disk error. Changed laser still unable to read any disk

The dvd drive has 2 motors in it one to spin the disc and the other to move the laser carriage. If any of them motors fail it will give a disc error reading. Also if you changed the laser make sure that laser carriage is locked on on the drive spline. If you can freely move the laser up and down with out any resistance then its not locked into place.

Jan 25, 2010 | Nintendo Wii Console

1 Answer

Y coby player doesnt play any type of discs anymore dvd cd vcd, it says "err disc"

First try cleaning the laser lens and if this don´t solve the problem change yhe motor disc spindle

Jan 12, 2010 | Televison & Video

1 Answer

No disc

change the DVD Assembly, (laser and 3 motors)

Nov 30, 2009 | Samsung DVD-V4600 DVD Player/VCR

1 Answer

What ever DVD i put into the machines,even the disc cleaner, i just get a message : UNKNOWN DISC

think it is the laser reader. it is not the motor that spins the disc for sure as i have changed it over. this means that probably the unit is scrap unless you can source and install a new laser and that might cost more in time and money than just buying a new one. I will never buy apex again . tried to write to customer services but no reply.

Nov 15, 2009 | Apex Digital AD-1100 DVD Player

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My Bose 123 has trouble playing DVD's. I put a cleaning DVD through several times but the video freezes frequently and good DVD's will often be declared as "Format Unsupported" by the player. I have...

Do you hear "spinning" when you put your ear close ro on on it?
Can you feel vibrations if you put your hand on it?
If you can then it's not the spindle motor...this rotates the disc.
When you start to play a disc...and if you can hear the spindle motor try changing the tracks to see if the motor that advance the laser from the center to the outer edge of the disc is will have to listen very carefully beyond the spindle motor to hear this since they will both be operating at the same time.

The problem may lies in the laser lens assembly which included the 2 small motors and the laser.

Either way you will probably need to take it to an qualified Bose service center in your area since dealing with lasers is very delicate work.



Oct 22, 2009 | Bose 3·2·1 II System

1 Answer

"No Disc"

"No Disc" also means "I can't read the Disc". The laser must be able to read the disc or you'll get that. There are several reasons:

Bad or noncompatible Disc: Some units won't play certain types of recorded discs. Try a rental or bought DVD.

Dirty laser lens: Either try a cleaning disc, or GENTLY clean the lens with a moistened Q-Tip.

Defective components like laser, spin motor, tracking motor, etc. Usually requires professional servicing.

Hope that helps...


Mar 25, 2008 | Televison & Video

2 Answers

DVD playback

Samsung dvd players are known for bad spin motors. You may try to clean the laser and see if that changes the disposition of the problem. If there is no change and with the top of the unit off,if you see the pin point of laser on top of the disc, and the disc moves or shivers, the chances are it is a bad spin motor. In most cases, it is not cost effective to replace the motor. If an auxillary line in jackis available , buy a $30 dvd to replace it rather than taking it to a service facility that will charge you the same amount to evaluate it. Scrivitron

Jun 15, 2007 | Samsung DVD-VR330 VCR and DVD Recorder

1 Answer

Check disc

Change your DVD player

May 23, 2007 | LG DE9523P DVD Player

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