DVD plays CD but says no disc with DVD

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Lou Lindsay
DVD plays CD but says no disc with DVD

My Philips Home Entertainment DVD plays music CD's fine but when a DVD is inserted it shows loading and then "No disc" and stops. HELP!!!!!

Matt Whitlock
You'll find a lot of useful

You'll find a lot of useful information in this article: http://www.techlore.com/article/10478/

Lou Lindsay
How can it play music CD's

How can it play music CD's and then not play DVD's? Do they not use the same drive, lens, etc.?

Matt Whitlock
Not always. In many players,

Not always. In many players, there is a seperate laser for CDs entirely.

In other cases, it's the same laser, but the focus of the beam is different. Reading a CD is much easier for a DVD player because the pit (which represents data) on the CD is about 7 times bigger than it is on the DVD. Think about it this way... If you look at one of those eye charts:



The big E at the top represents the CD, while the DVD is a row that's much further down, and much harder to see. If there is grime or dust on the laser lens, it may still be able to make out the E, but not the smaller letters.

There could be other problems as well. The laser may be unable to refocus for some mechanical reason, or there could be some other odd failure. It really depends on the player. Try cleaning the laser lens, resetting the unit, and trying various discs. In the end, you may need to replace it because, unfortunately, you can't get a pair of glasses for a DVD player. :-)

Lou Lindsay
Thanks so very much for

Thanks so very much for helping me with this problem

 

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