Well I was just using my Sony Cd/radio/tape player. I was using the Cd part and all of a sudden it just stoped playing. and the screen said no disc. I've tried cleaning it with alcohal but it just doesn't work. please help.
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The laser diode is usually the first component to fail in optical disc players.
If you can, open the casing to expose the CD mechanism.
Point a cell-phone camera at the laser lens, which hides under a flat bridge.
Without a disc inserted, press play or eject / load the CD tray.
Via the camera, you should see the laser diode briefly flash as it tries to read data from where disc should be.
No flash means IR laser diode has probably burnt out.
Don't stare directly into laser beam for long periods with the ***** eye - rather use the camera as an interface.
The beam's visual color is red, but the CDS sensor of a digital camera sees the IR radiation as white on mobile's screen.
This happens when your laser is not able to read the data of the disc. Either u are using disc which the player cannot read or the disc is not readable. If your CD player is not reading the discs which it used to read earlier then CD player laser head has to be replaced.
what is happening on the display is the laser reading the disc if its not reading the disc your cd player is faulty more than likely the laser is either dirty or had its day,make sure there is compatible music data on the disc,also check all the sound options on the stereo.
Some models of PIONEER cd players had radio frequency problems that caused them to work on and off. Are you near any radio or braodcast towers? Poorly shielded power supplies cause this as well. A weak laser diode in the pick-up assembly in model runs could be the problem. You might want to Google the model number and see if this is common for these units.