I put in a blank or recorded disk ,and the screen message is " unknown disk", and ejects the disk. I have used different blank disks,with the same result. Seems it is not " reading" the disk. Probable causes? Thank you!

SOURCE: dvd player will not read disk

have you tried getting a lense cleaner as they sometimes get alot of dust and will stop signal from disk to the laser if this dont solve the prolbem then you are looking at replacing the laser unit itself if the cleaning dont work and you think you are capable of taking the casing off make sure you switch it off first this should send the laser to the center of the laser tray if you take the case off and it is not in the center it might just be that it has got jammed now sometimes gently pushing it back to the middle will get it working again if it is already in the middle then it could be that the laser needs replacing but if not in middle push gently dont gerk it it should be quite stiff to push any way when you push back to middle try a disk with the casing off but please make sure you dont touch anything whislt it is plugged in if nothing works then it probably is the laser but before you do anything as soon as you get the case off switch it on and put a dvd in and make sure the disk is spinning if not laser unit is nakered and need replacing let me know how you get on hope this is some help to you

SOURCE: Samsung DVD-4600 DVD/VCR Player

My Smasung DVD/VCR Combo stopped reading DVDs because of a dirty read head. It started by only playing disks sometimes, and progressed to never playing disks. I assumed it was a dirty laser lens so I bought a lens cleaner set. Unfortunately my player wouldn't play the cleaner disk.

So I took it apart and cleaned the laser lens manually with some isopropyl alcohol (the clenser that came with my cleaning disk), and a lens cloth (that came with my glasses). Just open the case (starting with the screws in the back) and remove the snap in cross panel that obscures the lens of the DVD portion. Put a drop of cleanser on the lens and gently wipe it with the cloth.

Oh and by the way, I take no responsibility if you break your own player while following my instructions. My own DVD player was far out of warranty at the time I cracked it open.

SOURCE: Unknown disc error message

OKAY GUYS TRY USING THIS VERY COMPATIBLE MEDIA

(MEMOREX BRAND DVD-R) THIS WILL SOLVE A LOT OF YOUR PROBLEMS

Damen Wong

• 1950 Answers
• Posted on Feb 17, 2008

SOURCE: unknown disk error

Hi,

Did you try using a lens cleaner?

SOURCE: LG RH265 - Problem when trying to register blank disk/dubbing

The DVD needs to initialise the disk first. Come out of the HDD dubbing menu and press DVD on the remote. The blank recordable disk should be recognised and you should see Initialise disk? on the screen. Press Start and hey presto, you can now dub from the HDD Movie dubbing menu (as per the manual instructions).