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From what it sounds like, the laser lens in your cd player is having trouble reading discs. Is it just one cd or all? assuming it's all. you make want to get a cd lens cleaner disc....it's basically a cd with little bristles on the bottom designed to 'sweep away' the dust that accumulates on the lens. However, should you do that a few times (i usually give it about five good runs) and it still doesnt work, try another disc and listen closely for any sort of 'out of place' clicking noises....especially a monotonous repetitively click or ticking.... that usually indicates that the lens carriage has somehow jammed or come off track and needs to be replaced or refitted. refitting them on the track isnt difficult and once you open it up it's pretty self explanatory if you're mechanically inclined. Hope this helps.
The CD player does not detect disc, cause the laser pickup is at end of life. One possible solution is to buy a CD cleaning kit and follow instructions, if this fails! the whole laser pickup assembly will need to be replaced. This would not be cost effective, far cheaper to replace the unit.
The laser assembly is not reading the disc, as the laser ages it becomes weaker until it can no longer scan the disc and can not play, you have done everything that I would have recommended, at this stage it is far cheaper to replace the boombox than replace the laser pickup assembly.
In most cases when the CD does not play it is possible that the optical head is a suspect. Sometimes it might pick up ordinary audio CD but will not play other formats. This indicates that the optical head is weak and so there is no detection or scanning of the CD . If the optical is working the tracks will be read immediately but with no scanning the laser head can be defective. Sometimes certain cleaner disks will not be tracked to run for cleaning as it will not be read and so will reject. Hence it is ideal to manually clean the laser head eye using a cleaning swap /cotton bud with gentle pressure on the lens eye. If there is no result then watch if the CD spins or tries to spin. If so the board seems to work unless a test is taken on the main board but the possibility of a defective optical head can be the suspected fault. If any of the above seems otherwise we must recheck with possibilities of a malfunction of the main processor board
how long have you been using this player? The problem should be from the lens (laser).
The lens is weak and that's why it cannot read/load Cd's. The weak lens is also what's making it say "no disc".
Get a lens cleaner and use it to clean the lens, but if the lens still does the same thing even after using the lens cleaner, then it means you would have to change the whole lens completely to a brand new one.
By so doing your player would play all Cd's with no problem at all.
use a cotton swab to clean the optical lens-which is seen by opening the CD cover. if after cleaning the lens it still doesnt play a cd - exercise all manual switches(could be a dirty cd/radio switch), several times. after these steps, and the cd still refuses to spin...its hopless. the optic is bad.and not economical to repair. bet the cotton swab does the trick.
the laser lens needs cleaned most likely, you can purchace a cleaning disk, or take the unit apart and used a eyeglasses cloth and very gently wipe the lens clean. the lens will be very small and near the motor that spins the cd. when wiping it off, wipe in one direction only. if that doesnt work then the laser has become weak or has quit working
Your laser head has probably gotten weak, or the spindle motor is worn. You can probably replace either yourself if you're VERY mechanically inclined, otherwise I would leave that up to a shop.
hi you could try cleaning the laser lense with dust free cloth but soft one if this dont work try cleaning your cd you can run it under cold water tap and then dry with soft cloth make sure their is no scratches on disk surface if this still dont solve problem then you find the laser itself needs replacing. But the problem with this is replacing the laser and getting it calibrated will cost more than a new stereo thats why knowbody repairs these kind of problems let me know if you need further assistance